transport-helper: drop read/write errno checks
[git.git] / dir.c
blobab6477d777e96cb9789f1c6b3220af349731a701
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)
279 static int match_attrs(const struct index_state *istate,
280 const char *name, int namelen,
281 const struct pathspec_item *item)
283 int i;
284 char *to_free = NULL;
286 if (name[namelen])
287 name = to_free = xmemdupz(name, namelen);
289 git_check_attr(istate, name, item->attr_check);
291 free(to_free);
293 for (i = 0; i < item->attr_match_nr; i++) {
294 const char *value;
295 int matched;
296 enum attr_match_mode match_mode;
298 value = item->attr_check->items[i].value;
299 match_mode = item->attr_match[i].match_mode;
301 if (ATTR_TRUE(value))
302 matched = (match_mode == MATCH_SET);
303 else if (ATTR_FALSE(value))
304 matched = (match_mode == MATCH_UNSET);
305 else if (ATTR_UNSET(value))
306 matched = (match_mode == MATCH_UNSPECIFIED);
307 else
308 matched = (match_mode == MATCH_VALUE &&
309 !strcmp(item->attr_match[i].value, value));
310 if (!matched)
311 return 0;
314 return 1;
318 * Does 'match' match the given name?
319 * A match is found if
321 * (1) the 'match' string is leading directory of 'name', or
322 * (2) the 'match' string is a wildcard and matches 'name', or
323 * (3) the 'match' string is exactly the same as 'name'.
325 * and the return value tells which case it was.
327 * It returns 0 when there is no match.
329 static int match_pathspec_item(const struct index_state *istate,
330 const struct pathspec_item *item, int prefix,
331 const char *name, int namelen, unsigned flags)
333 /* name/namelen has prefix cut off by caller */
334 const char *match = item->match + prefix;
335 int matchlen = item->len - prefix;
338 * The normal call pattern is:
339 * 1. prefix = common_prefix_len(ps);
340 * 2. prune something, or fill_directory
341 * 3. match_pathspec()
343 * 'prefix' at #1 may be shorter than the command's prefix and
344 * it's ok for #2 to match extra files. Those extras will be
345 * trimmed at #3.
347 * Suppose the pathspec is 'foo' and '../bar' running from
348 * subdir 'xyz'. The common prefix at #1 will be empty, thanks
349 * to "../". We may have xyz/foo _and_ XYZ/foo after #2. The
350 * user does not want XYZ/foo, only the "foo" part should be
351 * case-insensitive. We need to filter out XYZ/foo here. In
352 * other words, we do not trust the caller on comparing the
353 * prefix part when :(icase) is involved. We do exact
354 * comparison ourselves.
356 * Normally the caller (common_prefix_len() in fact) does
357 * _exact_ matching on name[-prefix+1..-1] and we do not need
358 * to check that part. Be defensive and check it anyway, in
359 * case common_prefix_len is changed, or a new caller is
360 * introduced that does not use common_prefix_len.
362 * If the penalty turns out too high when prefix is really
363 * long, maybe change it to
364 * strncmp(match, name, item->prefix - prefix)
366 if (item->prefix && (item->magic & PATHSPEC_ICASE) &&
367 strncmp(item->match, name - prefix, item->prefix))
368 return 0;
370 if (item->attr_match_nr && !match_attrs(istate, name, namelen, item))
371 return 0;
373 /* If the match was just the prefix, we matched */
374 if (!*match)
375 return MATCHED_RECURSIVELY;
377 if (matchlen <= namelen && !ps_strncmp(item, match, name, matchlen)) {
378 if (matchlen == namelen)
379 return MATCHED_EXACTLY;
381 if (match[matchlen-1] == '/' || name[matchlen] == '/')
382 return MATCHED_RECURSIVELY;
383 } else if ((flags & DO_MATCH_DIRECTORY) &&
384 match[matchlen - 1] == '/' &&
385 namelen == matchlen - 1 &&
386 !ps_strncmp(item, match, name, namelen))
387 return MATCHED_EXACTLY;
389 if (item->nowildcard_len < item->len &&
390 !git_fnmatch(item, match, name,
391 item->nowildcard_len - prefix))
392 return MATCHED_FNMATCH;
394 /* Perform checks to see if "name" is a super set of the pathspec */
395 if (flags & DO_MATCH_SUBMODULE) {
396 /* name is a literal prefix of the pathspec */
397 if ((namelen < matchlen) &&
398 (match[namelen] == '/') &&
399 !ps_strncmp(item, match, name, namelen))
400 return MATCHED_RECURSIVELY;
402 /* name" doesn't match up to the first wild character */
403 if (item->nowildcard_len < item->len &&
404 ps_strncmp(item, match, name,
405 item->nowildcard_len - prefix))
406 return 0;
409 * Here is where we would perform a wildmatch to check if
410 * "name" can be matched as a directory (or a prefix) against
411 * the pathspec. Since wildmatch doesn't have this capability
412 * at the present we have to punt and say that it is a match,
413 * potentially returning a false positive
414 * The submodules themselves will be able to perform more
415 * accurate matching to determine if the pathspec matches.
417 return MATCHED_RECURSIVELY;
420 return 0;
424 * Given a name and a list of pathspecs, returns the nature of the
425 * closest (i.e. most specific) match of the name to any of the
426 * pathspecs.
428 * The caller typically calls this multiple times with the same
429 * pathspec and seen[] array but with different name/namelen
430 * (e.g. entries from the index) and is interested in seeing if and
431 * how each pathspec matches all the names it calls this function
432 * with. A mark is left in the seen[] array for each pathspec element
433 * indicating the closest type of match that element achieved, so if
434 * seen[n] remains zero after multiple invocations, that means the nth
435 * pathspec did not match any names, which could indicate that the
436 * user mistyped the nth pathspec.
438 static int do_match_pathspec(const struct index_state *istate,
439 const struct pathspec *ps,
440 const char *name, int namelen,
441 int prefix, char *seen,
442 unsigned flags)
444 int i, retval = 0, exclude = flags & DO_MATCH_EXCLUDE;
446 GUARD_PATHSPEC(ps,
447 PATHSPEC_FROMTOP |
448 PATHSPEC_MAXDEPTH |
449 PATHSPEC_LITERAL |
450 PATHSPEC_GLOB |
451 PATHSPEC_ICASE |
452 PATHSPEC_EXCLUDE |
453 PATHSPEC_ATTR);
455 if (!ps->nr) {
456 if (!ps->recursive ||
457 !(ps->magic & PATHSPEC_MAXDEPTH) ||
458 ps->max_depth == -1)
459 return MATCHED_RECURSIVELY;
461 if (within_depth(name, namelen, 0, ps->max_depth))
462 return MATCHED_EXACTLY;
463 else
464 return 0;
467 name += prefix;
468 namelen -= prefix;
470 for (i = ps->nr - 1; i >= 0; i--) {
471 int how;
473 if ((!exclude && ps->items[i].magic & PATHSPEC_EXCLUDE) ||
474 ( exclude && !(ps->items[i].magic & PATHSPEC_EXCLUDE)))
475 continue;
477 if (seen && seen[i] == MATCHED_EXACTLY)
478 continue;
480 * Make exclude patterns optional and never report
481 * "pathspec ':(exclude)foo' matches no files"
483 if (seen && ps->items[i].magic & PATHSPEC_EXCLUDE)
484 seen[i] = MATCHED_FNMATCH;
485 how = match_pathspec_item(istate, ps->items+i, prefix, name,
486 namelen, flags);
487 if (ps->recursive &&
488 (ps->magic & PATHSPEC_MAXDEPTH) &&
489 ps->max_depth != -1 &&
490 how && how != MATCHED_FNMATCH) {
491 int len = ps->items[i].len;
492 if (name[len] == '/')
493 len++;
494 if (within_depth(name+len, namelen-len, 0, ps->max_depth))
495 how = MATCHED_EXACTLY;
496 else
497 how = 0;
499 if (how) {
500 if (retval < how)
501 retval = how;
502 if (seen && seen[i] < how)
503 seen[i] = how;
506 return retval;
509 int match_pathspec(const struct index_state *istate,
510 const struct pathspec *ps,
511 const char *name, int namelen,
512 int prefix, char *seen, int is_dir)
514 int positive, negative;
515 unsigned flags = is_dir ? DO_MATCH_DIRECTORY : 0;
516 positive = do_match_pathspec(istate, ps, name, namelen,
517 prefix, seen, flags);
518 if (!(ps->magic & PATHSPEC_EXCLUDE) || !positive)
519 return positive;
520 negative = do_match_pathspec(istate, ps, name, namelen,
521 prefix, seen,
522 flags | DO_MATCH_EXCLUDE);
523 return negative ? 0 : positive;
527 * Check if a submodule is a superset of the pathspec
529 int submodule_path_match(const struct index_state *istate,
530 const struct pathspec *ps,
531 const char *submodule_name,
532 char *seen)
534 int matched = do_match_pathspec(istate, ps, submodule_name,
535 strlen(submodule_name),
536 0, seen,
537 DO_MATCH_DIRECTORY |
538 DO_MATCH_SUBMODULE);
539 return matched;
542 int report_path_error(const char *ps_matched,
543 const struct pathspec *pathspec,
544 const char *prefix)
547 * Make sure all pathspec matched; otherwise it is an error.
549 int num, errors = 0;
550 for (num = 0; num < pathspec->nr; num++) {
551 int other, found_dup;
553 if (ps_matched[num])
554 continue;
556 * The caller might have fed identical pathspec
557 * twice. Do not barf on such a mistake.
558 * FIXME: parse_pathspec should have eliminated
559 * duplicate pathspec.
561 for (found_dup = other = 0;
562 !found_dup && other < pathspec->nr;
563 other++) {
564 if (other == num || !ps_matched[other])
565 continue;
566 if (!strcmp(pathspec->items[other].original,
567 pathspec->items[num].original))
569 * Ok, we have a match already.
571 found_dup = 1;
573 if (found_dup)
574 continue;
576 error(_("pathspec '%s' did not match any file(s) known to git"),
577 pathspec->items[num].original);
578 errors++;
580 return errors;
584 * Return the length of the "simple" part of a path match limiter.
586 int simple_length(const char *match)
588 int len = -1;
590 for (;;) {
591 unsigned char c = *match++;
592 len++;
593 if (c == '\0' || is_glob_special(c))
594 return len;
598 int no_wildcard(const char *string)
600 return string[simple_length(string)] == '\0';
603 void parse_exclude_pattern(const char **pattern,
604 int *patternlen,
605 unsigned *flags,
606 int *nowildcardlen)
608 const char *p = *pattern;
609 size_t i, len;
611 *flags = 0;
612 if (*p == '!') {
613 *flags |= EXC_FLAG_NEGATIVE;
614 p++;
616 len = strlen(p);
617 if (len && p[len - 1] == '/') {
618 len--;
619 *flags |= EXC_FLAG_MUSTBEDIR;
621 for (i = 0; i < len; i++) {
622 if (p[i] == '/')
623 break;
625 if (i == len)
626 *flags |= EXC_FLAG_NODIR;
627 *nowildcardlen = simple_length(p);
629 * we should have excluded the trailing slash from 'p' too,
630 * but that's one more allocation. Instead just make sure
631 * nowildcardlen does not exceed real patternlen
633 if (*nowildcardlen > len)
634 *nowildcardlen = len;
635 if (*p == '*' && no_wildcard(p + 1))
636 *flags |= EXC_FLAG_ENDSWITH;
637 *pattern = p;
638 *patternlen = len;
641 void add_exclude(const char *string, const char *base,
642 int baselen, struct exclude_list *el, int srcpos)
644 struct exclude *x;
645 int patternlen;
646 unsigned flags;
647 int nowildcardlen;
649 parse_exclude_pattern(&string, &patternlen, &flags, &nowildcardlen);
650 if (flags & EXC_FLAG_MUSTBEDIR) {
651 FLEXPTR_ALLOC_MEM(x, pattern, string, patternlen);
652 } else {
653 x = xmalloc(sizeof(*x));
654 x->pattern = string;
656 x->patternlen = patternlen;
657 x->nowildcardlen = nowildcardlen;
658 x->base = base;
659 x->baselen = baselen;
660 x->flags = flags;
661 x->srcpos = srcpos;
662 ALLOC_GROW(el->excludes, el->nr + 1, el->alloc);
663 el->excludes[el->nr++] = x;
664 x->el = el;
667 static int read_skip_worktree_file_from_index(const struct index_state *istate,
668 const char *path,
669 size_t *size_out, char **data_out,
670 struct oid_stat *oid_stat)
672 int pos, len;
674 len = strlen(path);
675 pos = index_name_pos(istate, path, len);
676 if (pos < 0)
677 return -1;
678 if (!ce_skip_worktree(istate->cache[pos]))
679 return -1;
681 return do_read_blob(&istate->cache[pos]->oid, oid_stat, size_out, data_out);
685 * Frees memory within el which was allocated for exclude patterns and
686 * the file buffer. Does not free el itself.
688 void clear_exclude_list(struct exclude_list *el)
690 int i;
692 for (i = 0; i < el->nr; i++)
693 free(el->excludes[i]);
694 free(el->excludes);
695 free(el->filebuf);
697 memset(el, 0, sizeof(*el));
700 static void trim_trailing_spaces(char *buf)
702 char *p, *last_space = NULL;
704 for (p = buf; *p; p++)
705 switch (*p) {
706 case ' ':
707 if (!last_space)
708 last_space = p;
709 break;
710 case '\\':
711 p++;
712 if (!*p)
713 return;
714 /* fallthrough */
715 default:
716 last_space = NULL;
719 if (last_space)
720 *last_space = '\0';
724 * Given a subdirectory name and "dir" of the current directory,
725 * search the subdir in "dir" and return it, or create a new one if it
726 * does not exist in "dir".
728 * If "name" has the trailing slash, it'll be excluded in the search.
730 static struct untracked_cache_dir *lookup_untracked(struct untracked_cache *uc,
731 struct untracked_cache_dir *dir,
732 const char *name, int len)
734 int first, last;
735 struct untracked_cache_dir *d;
736 if (!dir)
737 return NULL;
738 if (len && name[len - 1] == '/')
739 len--;
740 first = 0;
741 last = dir->dirs_nr;
742 while (last > first) {
743 int cmp, next = (last + first) >> 1;
744 d = dir->dirs[next];
745 cmp = strncmp(name, d->name, len);
746 if (!cmp && strlen(d->name) > len)
747 cmp = -1;
748 if (!cmp)
749 return d;
750 if (cmp < 0) {
751 last = next;
752 continue;
754 first = next+1;
757 uc->dir_created++;
758 FLEX_ALLOC_MEM(d, name, name, len);
760 ALLOC_GROW(dir->dirs, dir->dirs_nr + 1, dir->dirs_alloc);
761 MOVE_ARRAY(dir->dirs + first + 1, dir->dirs + first,
762 dir->dirs_nr - first);
763 dir->dirs_nr++;
764 dir->dirs[first] = d;
765 return d;
768 static void do_invalidate_gitignore(struct untracked_cache_dir *dir)
770 int i;
771 dir->valid = 0;
772 dir->untracked_nr = 0;
773 for (i = 0; i < dir->dirs_nr; i++)
774 do_invalidate_gitignore(dir->dirs[i]);
777 static void invalidate_gitignore(struct untracked_cache *uc,
778 struct untracked_cache_dir *dir)
780 uc->gitignore_invalidated++;
781 do_invalidate_gitignore(dir);
784 static void invalidate_directory(struct untracked_cache *uc,
785 struct untracked_cache_dir *dir)
787 int i;
790 * Invalidation increment here is just roughly correct. If
791 * untracked_nr or any of dirs[].recurse is non-zero, we
792 * should increment dir_invalidated too. But that's more
793 * expensive to do.
795 if (dir->valid)
796 uc->dir_invalidated++;
798 dir->valid = 0;
799 dir->untracked_nr = 0;
800 for (i = 0; i < dir->dirs_nr; i++)
801 dir->dirs[i]->recurse = 0;
804 static int add_excludes_from_buffer(char *buf, size_t size,
805 const char *base, int baselen,
806 struct exclude_list *el);
809 * Given a file with name "fname", read it (either from disk, or from
810 * an index if 'istate' is non-null), parse it and store the
811 * exclude rules in "el".
813 * If "ss" is not NULL, compute SHA-1 of the exclude file and fill
814 * stat data from disk (only valid if add_excludes returns zero). If
815 * ss_valid is non-zero, "ss" must contain good value as input.
817 static int add_excludes(const char *fname, const char *base, int baselen,
818 struct exclude_list *el, struct index_state *istate,
819 struct oid_stat *oid_stat)
821 struct stat st;
822 int r;
823 int fd;
824 size_t size = 0;
825 char *buf;
827 fd = open(fname, O_RDONLY);
828 if (fd < 0 || fstat(fd, &st) < 0) {
829 if (fd < 0)
830 warn_on_fopen_errors(fname);
831 else
832 close(fd);
833 if (!istate)
834 return -1;
835 r = read_skip_worktree_file_from_index(istate, fname,
836 &size, &buf,
837 oid_stat);
838 if (r != 1)
839 return r;
840 } else {
841 size = xsize_t(st.st_size);
842 if (size == 0) {
843 if (oid_stat) {
844 fill_stat_data(&oid_stat->stat, &st);
845 oidcpy(&oid_stat->oid, the_hash_algo->empty_blob);
846 oid_stat->valid = 1;
848 close(fd);
849 return 0;
851 buf = xmallocz(size);
852 if (read_in_full(fd, buf, size) != size) {
853 free(buf);
854 close(fd);
855 return -1;
857 buf[size++] = '\n';
858 close(fd);
859 if (oid_stat) {
860 int pos;
861 if (oid_stat->valid &&
862 !match_stat_data_racy(istate, &oid_stat->stat, &st))
863 ; /* no content change, ss->sha1 still good */
864 else if (istate &&
865 (pos = index_name_pos(istate, fname, strlen(fname))) >= 0 &&
866 !ce_stage(istate->cache[pos]) &&
867 ce_uptodate(istate->cache[pos]) &&
868 !would_convert_to_git(istate, fname))
869 oidcpy(&oid_stat->oid,
870 &istate->cache[pos]->oid);
871 else
872 hash_object_file(buf, size, "blob",
873 &oid_stat->oid);
874 fill_stat_data(&oid_stat->stat, &st);
875 oid_stat->valid = 1;
879 add_excludes_from_buffer(buf, size, base, baselen, el);
880 return 0;
883 static int add_excludes_from_buffer(char *buf, size_t size,
884 const char *base, int baselen,
885 struct exclude_list *el)
887 int i, lineno = 1;
888 char *entry;
890 el->filebuf = buf;
892 if (skip_utf8_bom(&buf, size))
893 size -= buf - el->filebuf;
895 entry = buf;
897 for (i = 0; i < size; i++) {
898 if (buf[i] == '\n') {
899 if (entry != buf + i && entry[0] != '#') {
900 buf[i - (i && buf[i-1] == '\r')] = 0;
901 trim_trailing_spaces(entry);
902 add_exclude(entry, base, baselen, el, lineno);
904 lineno++;
905 entry = buf + i + 1;
908 return 0;
911 int add_excludes_from_file_to_list(const char *fname, const char *base,
912 int baselen, struct exclude_list *el,
913 struct index_state *istate)
915 return add_excludes(fname, base, baselen, el, istate, NULL);
918 int add_excludes_from_blob_to_list(
919 struct object_id *oid,
920 const char *base, int baselen,
921 struct exclude_list *el)
923 char *buf;
924 size_t size;
925 int r;
927 r = do_read_blob(oid, NULL, &size, &buf);
928 if (r != 1)
929 return r;
931 add_excludes_from_buffer(buf, size, base, baselen, el);
932 return 0;
935 struct exclude_list *add_exclude_list(struct dir_struct *dir,
936 int group_type, const char *src)
938 struct exclude_list *el;
939 struct exclude_list_group *group;
941 group = &dir->exclude_list_group[group_type];
942 ALLOC_GROW(group->el, group->nr + 1, group->alloc);
943 el = &group->el[group->nr++];
944 memset(el, 0, sizeof(*el));
945 el->src = src;
946 return el;
950 * Used to set up core.excludesfile and .git/info/exclude lists.
952 static void add_excludes_from_file_1(struct dir_struct *dir, const char *fname,
953 struct oid_stat *oid_stat)
955 struct exclude_list *el;
957 * catch setup_standard_excludes() that's called before
958 * dir->untracked is assigned. That function behaves
959 * differently when dir->untracked is non-NULL.
961 if (!dir->untracked)
962 dir->unmanaged_exclude_files++;
963 el = add_exclude_list(dir, EXC_FILE, fname);
964 if (add_excludes(fname, "", 0, el, NULL, oid_stat) < 0)
965 die(_("cannot use %s as an exclude file"), fname);
968 void add_excludes_from_file(struct dir_struct *dir, const char *fname)
970 dir->unmanaged_exclude_files++; /* see validate_untracked_cache() */
971 add_excludes_from_file_1(dir, fname, NULL);
974 int match_basename(const char *basename, int basenamelen,
975 const char *pattern, int prefix, int patternlen,
976 unsigned flags)
978 if (prefix == patternlen) {
979 if (patternlen == basenamelen &&
980 !fspathncmp(pattern, basename, basenamelen))
981 return 1;
982 } else if (flags & EXC_FLAG_ENDSWITH) {
983 /* "*literal" matching against "fooliteral" */
984 if (patternlen - 1 <= basenamelen &&
985 !fspathncmp(pattern + 1,
986 basename + basenamelen - (patternlen - 1),
987 patternlen - 1))
988 return 1;
989 } else {
990 if (fnmatch_icase_mem(pattern, patternlen,
991 basename, basenamelen,
992 0) == 0)
993 return 1;
995 return 0;
998 int match_pathname(const char *pathname, int pathlen,
999 const char *base, int baselen,
1000 const char *pattern, int prefix, int patternlen,
1001 unsigned flags)
1003 const char *name;
1004 int namelen;
1007 * match with FNM_PATHNAME; the pattern has base implicitly
1008 * in front of it.
1010 if (*pattern == '/') {
1011 pattern++;
1012 patternlen--;
1013 prefix--;
1017 * baselen does not count the trailing slash. base[] may or
1018 * may not end with a trailing slash though.
1020 if (pathlen < baselen + 1 ||
1021 (baselen && pathname[baselen] != '/') ||
1022 fspathncmp(pathname, base, baselen))
1023 return 0;
1025 namelen = baselen ? pathlen - baselen - 1 : pathlen;
1026 name = pathname + pathlen - namelen;
1028 if (prefix) {
1030 * if the non-wildcard part is longer than the
1031 * remaining pathname, surely it cannot match.
1033 if (prefix > namelen)
1034 return 0;
1036 if (fspathncmp(pattern, name, prefix))
1037 return 0;
1038 pattern += prefix;
1039 patternlen -= prefix;
1040 name += prefix;
1041 namelen -= prefix;
1044 * If the whole pattern did not have a wildcard,
1045 * then our prefix match is all we need; we
1046 * do not need to call fnmatch at all.
1048 if (!patternlen && !namelen)
1049 return 1;
1052 return fnmatch_icase_mem(pattern, patternlen,
1053 name, namelen,
1054 WM_PATHNAME) == 0;
1058 * Scan the given exclude list in reverse to see whether pathname
1059 * should be ignored. The first match (i.e. the last on the list), if
1060 * any, determines the fate. Returns the exclude_list element which
1061 * matched, or NULL for undecided.
1063 static struct exclude *last_exclude_matching_from_list(const char *pathname,
1064 int pathlen,
1065 const char *basename,
1066 int *dtype,
1067 struct exclude_list *el,
1068 struct index_state *istate)
1070 struct exclude *exc = NULL; /* undecided */
1071 int i;
1073 if (!el->nr)
1074 return NULL; /* undefined */
1076 for (i = el->nr - 1; 0 <= i; i--) {
1077 struct exclude *x = el->excludes[i];
1078 const char *exclude = x->pattern;
1079 int prefix = x->nowildcardlen;
1081 if (x->flags & EXC_FLAG_MUSTBEDIR) {
1082 if (*dtype == DT_UNKNOWN)
1083 *dtype = get_dtype(NULL, istate, pathname, pathlen);
1084 if (*dtype != DT_DIR)
1085 continue;
1088 if (x->flags & EXC_FLAG_NODIR) {
1089 if (match_basename(basename,
1090 pathlen - (basename - pathname),
1091 exclude, prefix, x->patternlen,
1092 x->flags)) {
1093 exc = x;
1094 break;
1096 continue;
1099 assert(x->baselen == 0 || x->base[x->baselen - 1] == '/');
1100 if (match_pathname(pathname, pathlen,
1101 x->base, x->baselen ? x->baselen - 1 : 0,
1102 exclude, prefix, x->patternlen, x->flags)) {
1103 exc = x;
1104 break;
1107 return exc;
1111 * Scan the list and let the last match determine the fate.
1112 * Return 1 for exclude, 0 for include and -1 for undecided.
1114 int is_excluded_from_list(const char *pathname,
1115 int pathlen, const char *basename, int *dtype,
1116 struct exclude_list *el, struct index_state *istate)
1118 struct exclude *exclude;
1119 exclude = last_exclude_matching_from_list(pathname, pathlen, basename,
1120 dtype, el, istate);
1121 if (exclude)
1122 return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
1123 return -1; /* undecided */
1126 static struct exclude *last_exclude_matching_from_lists(struct dir_struct *dir,
1127 struct index_state *istate,
1128 const char *pathname, int pathlen, const char *basename,
1129 int *dtype_p)
1131 int i, j;
1132 struct exclude_list_group *group;
1133 struct exclude *exclude;
1134 for (i = EXC_CMDL; i <= EXC_FILE; i++) {
1135 group = &dir->exclude_list_group[i];
1136 for (j = group->nr - 1; j >= 0; j--) {
1137 exclude = last_exclude_matching_from_list(
1138 pathname, pathlen, basename, dtype_p,
1139 &group->el[j], istate);
1140 if (exclude)
1141 return exclude;
1144 return NULL;
1148 * Loads the per-directory exclude list for the substring of base
1149 * which has a char length of baselen.
1151 static void prep_exclude(struct dir_struct *dir,
1152 struct index_state *istate,
1153 const char *base, int baselen)
1155 struct exclude_list_group *group;
1156 struct exclude_list *el;
1157 struct exclude_stack *stk = NULL;
1158 struct untracked_cache_dir *untracked;
1159 int current;
1161 group = &dir->exclude_list_group[EXC_DIRS];
1164 * Pop the exclude lists from the EXCL_DIRS exclude_list_group
1165 * which originate from directories not in the prefix of the
1166 * path being checked.
1168 while ((stk = dir->exclude_stack) != NULL) {
1169 if (stk->baselen <= baselen &&
1170 !strncmp(dir->basebuf.buf, base, stk->baselen))
1171 break;
1172 el = &group->el[dir->exclude_stack->exclude_ix];
1173 dir->exclude_stack = stk->prev;
1174 dir->exclude = NULL;
1175 free((char *)el->src); /* see strbuf_detach() below */
1176 clear_exclude_list(el);
1177 free(stk);
1178 group->nr--;
1181 /* Skip traversing into sub directories if the parent is excluded */
1182 if (dir->exclude)
1183 return;
1186 * Lazy initialization. All call sites currently just
1187 * memset(dir, 0, sizeof(*dir)) before use. Changing all of
1188 * them seems lots of work for little benefit.
1190 if (!dir->basebuf.buf)
1191 strbuf_init(&dir->basebuf, PATH_MAX);
1193 /* Read from the parent directories and push them down. */
1194 current = stk ? stk->baselen : -1;
1195 strbuf_setlen(&dir->basebuf, current < 0 ? 0 : current);
1196 if (dir->untracked)
1197 untracked = stk ? stk->ucd : dir->untracked->root;
1198 else
1199 untracked = NULL;
1201 while (current < baselen) {
1202 const char *cp;
1203 struct oid_stat oid_stat;
1205 stk = xcalloc(1, sizeof(*stk));
1206 if (current < 0) {
1207 cp = base;
1208 current = 0;
1209 } else {
1210 cp = strchr(base + current + 1, '/');
1211 if (!cp)
1212 die("oops in prep_exclude");
1213 cp++;
1214 untracked =
1215 lookup_untracked(dir->untracked, untracked,
1216 base + current,
1217 cp - base - current);
1219 stk->prev = dir->exclude_stack;
1220 stk->baselen = cp - base;
1221 stk->exclude_ix = group->nr;
1222 stk->ucd = untracked;
1223 el = add_exclude_list(dir, EXC_DIRS, NULL);
1224 strbuf_add(&dir->basebuf, base + current, stk->baselen - current);
1225 assert(stk->baselen == dir->basebuf.len);
1227 /* Abort if the directory is excluded */
1228 if (stk->baselen) {
1229 int dt = DT_DIR;
1230 dir->basebuf.buf[stk->baselen - 1] = 0;
1231 dir->exclude = last_exclude_matching_from_lists(dir,
1232 istate,
1233 dir->basebuf.buf, stk->baselen - 1,
1234 dir->basebuf.buf + current, &dt);
1235 dir->basebuf.buf[stk->baselen - 1] = '/';
1236 if (dir->exclude &&
1237 dir->exclude->flags & EXC_FLAG_NEGATIVE)
1238 dir->exclude = NULL;
1239 if (dir->exclude) {
1240 dir->exclude_stack = stk;
1241 return;
1245 /* Try to read per-directory file */
1246 oidclr(&oid_stat.oid);
1247 oid_stat.valid = 0;
1248 if (dir->exclude_per_dir &&
1250 * If we know that no files have been added in
1251 * this directory (i.e. valid_cached_dir() has
1252 * been executed and set untracked->valid) ..
1254 (!untracked || !untracked->valid ||
1256 * .. and .gitignore does not exist before
1257 * (i.e. null exclude_oid). Then we can skip
1258 * loading .gitignore, which would result in
1259 * ENOENT anyway.
1261 !is_null_oid(&untracked->exclude_oid))) {
1263 * dir->basebuf gets reused by the traversal, but we
1264 * need fname to remain unchanged to ensure the src
1265 * member of each struct exclude correctly
1266 * back-references its source file. Other invocations
1267 * of add_exclude_list provide stable strings, so we
1268 * strbuf_detach() and free() here in the caller.
1270 struct strbuf sb = STRBUF_INIT;
1271 strbuf_addbuf(&sb, &dir->basebuf);
1272 strbuf_addstr(&sb, dir->exclude_per_dir);
1273 el->src = strbuf_detach(&sb, NULL);
1274 add_excludes(el->src, el->src, stk->baselen, el, istate,
1275 untracked ? &oid_stat : NULL);
1278 * NEEDSWORK: when untracked cache is enabled, prep_exclude()
1279 * will first be called in valid_cached_dir() then maybe many
1280 * times more in last_exclude_matching(). When the cache is
1281 * used, last_exclude_matching() will not be called and
1282 * reading .gitignore content will be a waste.
1284 * So when it's called by valid_cached_dir() and we can get
1285 * .gitignore SHA-1 from the index (i.e. .gitignore is not
1286 * modified on work tree), we could delay reading the
1287 * .gitignore content until we absolutely need it in
1288 * last_exclude_matching(). Be careful about ignore rule
1289 * order, though, if you do that.
1291 if (untracked &&
1292 !oideq(&oid_stat.oid, &untracked->exclude_oid)) {
1293 invalidate_gitignore(dir->untracked, untracked);
1294 oidcpy(&untracked->exclude_oid, &oid_stat.oid);
1296 dir->exclude_stack = stk;
1297 current = stk->baselen;
1299 strbuf_setlen(&dir->basebuf, baselen);
1303 * Loads the exclude lists for the directory containing pathname, then
1304 * scans all exclude lists to determine whether pathname is excluded.
1305 * Returns the exclude_list element which matched, or NULL for
1306 * undecided.
1308 struct exclude *last_exclude_matching(struct dir_struct *dir,
1309 struct index_state *istate,
1310 const char *pathname,
1311 int *dtype_p)
1313 int pathlen = strlen(pathname);
1314 const char *basename = strrchr(pathname, '/');
1315 basename = (basename) ? basename+1 : pathname;
1317 prep_exclude(dir, istate, pathname, basename-pathname);
1319 if (dir->exclude)
1320 return dir->exclude;
1322 return last_exclude_matching_from_lists(dir, istate, pathname, pathlen,
1323 basename, dtype_p);
1327 * Loads the exclude lists for the directory containing pathname, then
1328 * scans all exclude lists to determine whether pathname is excluded.
1329 * Returns 1 if true, otherwise 0.
1331 int is_excluded(struct dir_struct *dir, struct index_state *istate,
1332 const char *pathname, int *dtype_p)
1334 struct exclude *exclude =
1335 last_exclude_matching(dir, istate, pathname, dtype_p);
1336 if (exclude)
1337 return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
1338 return 0;
1341 static struct dir_entry *dir_entry_new(const char *pathname, int len)
1343 struct dir_entry *ent;
1345 FLEX_ALLOC_MEM(ent, name, pathname, len);
1346 ent->len = len;
1347 return ent;
1350 static struct dir_entry *dir_add_name(struct dir_struct *dir,
1351 struct index_state *istate,
1352 const char *pathname, int len)
1354 if (index_file_exists(istate, pathname, len, ignore_case))
1355 return NULL;
1357 ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
1358 return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
1361 struct dir_entry *dir_add_ignored(struct dir_struct *dir,
1362 struct index_state *istate,
1363 const char *pathname, int len)
1365 if (!index_name_is_other(istate, pathname, len))
1366 return NULL;
1368 ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc);
1369 return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len);
1372 enum exist_status {
1373 index_nonexistent = 0,
1374 index_directory,
1375 index_gitdir
1379 * Do not use the alphabetically sorted index to look up
1380 * the directory name; instead, use the case insensitive
1381 * directory hash.
1383 static enum exist_status directory_exists_in_index_icase(struct index_state *istate,
1384 const char *dirname, int len)
1386 struct cache_entry *ce;
1388 if (index_dir_exists(istate, dirname, len))
1389 return index_directory;
1391 ce = index_file_exists(istate, dirname, len, ignore_case);
1392 if (ce && S_ISGITLINK(ce->ce_mode))
1393 return index_gitdir;
1395 return index_nonexistent;
1399 * The index sorts alphabetically by entry name, which
1400 * means that a gitlink sorts as '\0' at the end, while
1401 * a directory (which is defined not as an entry, but as
1402 * the files it contains) will sort with the '/' at the
1403 * end.
1405 static enum exist_status directory_exists_in_index(struct index_state *istate,
1406 const char *dirname, int len)
1408 int pos;
1410 if (ignore_case)
1411 return directory_exists_in_index_icase(istate, dirname, len);
1413 pos = index_name_pos(istate, dirname, len);
1414 if (pos < 0)
1415 pos = -pos-1;
1416 while (pos < istate->cache_nr) {
1417 const struct cache_entry *ce = istate->cache[pos++];
1418 unsigned char endchar;
1420 if (strncmp(ce->name, dirname, len))
1421 break;
1422 endchar = ce->name[len];
1423 if (endchar > '/')
1424 break;
1425 if (endchar == '/')
1426 return index_directory;
1427 if (!endchar && S_ISGITLINK(ce->ce_mode))
1428 return index_gitdir;
1430 return index_nonexistent;
1434 * When we find a directory when traversing the filesystem, we
1435 * have three distinct cases:
1437 * - ignore it
1438 * - see it as a directory
1439 * - recurse into it
1441 * and which one we choose depends on a combination of existing
1442 * git index contents and the flags passed into the directory
1443 * traversal routine.
1445 * Case 1: If we *already* have entries in the index under that
1446 * directory name, we always recurse into the directory to see
1447 * all the files.
1449 * Case 2: If we *already* have that directory name as a gitlink,
1450 * we always continue to see it as a gitlink, regardless of whether
1451 * there is an actual git directory there or not (it might not
1452 * be checked out as a subproject!)
1454 * Case 3: if we didn't have it in the index previously, we
1455 * have a few sub-cases:
1457 * (a) if "show_other_directories" is true, we show it as
1458 * just a directory, unless "hide_empty_directories" is
1459 * also true, in which case we need to check if it contains any
1460 * untracked and / or ignored files.
1461 * (b) if it looks like a git directory, and we don't have
1462 * 'no_gitlinks' set we treat it as a gitlink, and show it
1463 * as a directory.
1464 * (c) otherwise, we recurse into it.
1466 static enum path_treatment treat_directory(struct dir_struct *dir,
1467 struct index_state *istate,
1468 struct untracked_cache_dir *untracked,
1469 const char *dirname, int len, int baselen, int exclude,
1470 const struct pathspec *pathspec)
1472 /* The "len-1" is to strip the final '/' */
1473 switch (directory_exists_in_index(istate, dirname, len-1)) {
1474 case index_directory:
1475 return path_recurse;
1477 case index_gitdir:
1478 return path_none;
1480 case index_nonexistent:
1481 if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
1482 break;
1483 if (exclude &&
1484 (dir->flags & DIR_SHOW_IGNORED_TOO) &&
1485 (dir->flags & DIR_SHOW_IGNORED_TOO_MODE_MATCHING)) {
1488 * This is an excluded directory and we are
1489 * showing ignored paths that match an exclude
1490 * pattern. (e.g. show directory as ignored
1491 * only if it matches an exclude pattern).
1492 * This path will either be 'path_excluded`
1493 * (if we are showing empty directories or if
1494 * the directory is not empty), or will be
1495 * 'path_none' (empty directory, and we are
1496 * not showing empty directories).
1498 if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
1499 return path_excluded;
1501 if (read_directory_recursive(dir, istate, dirname, len,
1502 untracked, 1, 1, pathspec) == path_excluded)
1503 return path_excluded;
1505 return path_none;
1507 if (!(dir->flags & DIR_NO_GITLINKS)) {
1508 struct object_id oid;
1509 if (resolve_gitlink_ref(dirname, "HEAD", &oid) == 0)
1510 return exclude ? path_excluded : path_untracked;
1512 return path_recurse;
1515 /* This is the "show_other_directories" case */
1517 if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
1518 return exclude ? path_excluded : path_untracked;
1520 untracked = lookup_untracked(dir->untracked, untracked,
1521 dirname + baselen, len - baselen);
1524 * If this is an excluded directory, then we only need to check if
1525 * the directory contains any files.
1527 return read_directory_recursive(dir, istate, dirname, len,
1528 untracked, 1, exclude, pathspec);
1532 * This is an inexact early pruning of any recursive directory
1533 * reading - if the path cannot possibly be in the pathspec,
1534 * return true, and we'll skip it early.
1536 static int simplify_away(const char *path, int pathlen,
1537 const struct pathspec *pathspec)
1539 int i;
1541 if (!pathspec || !pathspec->nr)
1542 return 0;
1544 GUARD_PATHSPEC(pathspec,
1545 PATHSPEC_FROMTOP |
1546 PATHSPEC_MAXDEPTH |
1547 PATHSPEC_LITERAL |
1548 PATHSPEC_GLOB |
1549 PATHSPEC_ICASE |
1550 PATHSPEC_EXCLUDE |
1551 PATHSPEC_ATTR);
1553 for (i = 0; i < pathspec->nr; i++) {
1554 const struct pathspec_item *item = &pathspec->items[i];
1555 int len = item->nowildcard_len;
1557 if (len > pathlen)
1558 len = pathlen;
1559 if (!ps_strncmp(item, item->match, path, len))
1560 return 0;
1563 return 1;
1567 * This function tells us whether an excluded path matches a
1568 * list of "interesting" pathspecs. That is, whether a path matched
1569 * by any of the pathspecs could possibly be ignored by excluding
1570 * the specified path. This can happen if:
1572 * 1. the path is mentioned explicitly in the pathspec
1574 * 2. the path is a directory prefix of some element in the
1575 * pathspec
1577 static int exclude_matches_pathspec(const char *path, int pathlen,
1578 const struct pathspec *pathspec)
1580 int i;
1582 if (!pathspec || !pathspec->nr)
1583 return 0;
1585 GUARD_PATHSPEC(pathspec,
1586 PATHSPEC_FROMTOP |
1587 PATHSPEC_MAXDEPTH |
1588 PATHSPEC_LITERAL |
1589 PATHSPEC_GLOB |
1590 PATHSPEC_ICASE |
1591 PATHSPEC_EXCLUDE);
1593 for (i = 0; i < pathspec->nr; i++) {
1594 const struct pathspec_item *item = &pathspec->items[i];
1595 int len = item->nowildcard_len;
1597 if (len == pathlen &&
1598 !ps_strncmp(item, item->match, path, pathlen))
1599 return 1;
1600 if (len > pathlen &&
1601 item->match[pathlen] == '/' &&
1602 !ps_strncmp(item, item->match, path, pathlen))
1603 return 1;
1605 return 0;
1608 static int get_index_dtype(struct index_state *istate,
1609 const char *path, int len)
1611 int pos;
1612 const struct cache_entry *ce;
1614 ce = index_file_exists(istate, path, len, 0);
1615 if (ce) {
1616 if (!ce_uptodate(ce))
1617 return DT_UNKNOWN;
1618 if (S_ISGITLINK(ce->ce_mode))
1619 return DT_DIR;
1621 * Nobody actually cares about the
1622 * difference between DT_LNK and DT_REG
1624 return DT_REG;
1627 /* Try to look it up as a directory */
1628 pos = index_name_pos(istate, path, len);
1629 if (pos >= 0)
1630 return DT_UNKNOWN;
1631 pos = -pos-1;
1632 while (pos < istate->cache_nr) {
1633 ce = istate->cache[pos++];
1634 if (strncmp(ce->name, path, len))
1635 break;
1636 if (ce->name[len] > '/')
1637 break;
1638 if (ce->name[len] < '/')
1639 continue;
1640 if (!ce_uptodate(ce))
1641 break; /* continue? */
1642 return DT_DIR;
1644 return DT_UNKNOWN;
1647 static int get_dtype(struct dirent *de, struct index_state *istate,
1648 const char *path, int len)
1650 int dtype = de ? DTYPE(de) : DT_UNKNOWN;
1651 struct stat st;
1653 if (dtype != DT_UNKNOWN)
1654 return dtype;
1655 dtype = get_index_dtype(istate, path, len);
1656 if (dtype != DT_UNKNOWN)
1657 return dtype;
1658 if (lstat(path, &st))
1659 return dtype;
1660 if (S_ISREG(st.st_mode))
1661 return DT_REG;
1662 if (S_ISDIR(st.st_mode))
1663 return DT_DIR;
1664 if (S_ISLNK(st.st_mode))
1665 return DT_LNK;
1666 return dtype;
1669 static enum path_treatment treat_one_path(struct dir_struct *dir,
1670 struct untracked_cache_dir *untracked,
1671 struct index_state *istate,
1672 struct strbuf *path,
1673 int baselen,
1674 const struct pathspec *pathspec,
1675 int dtype, struct dirent *de)
1677 int exclude;
1678 int has_path_in_index = !!index_file_exists(istate, path->buf, path->len, ignore_case);
1679 enum path_treatment path_treatment;
1681 if (dtype == DT_UNKNOWN)
1682 dtype = get_dtype(de, istate, path->buf, path->len);
1684 /* Always exclude indexed files */
1685 if (dtype != DT_DIR && has_path_in_index)
1686 return path_none;
1689 * When we are looking at a directory P in the working tree,
1690 * there are three cases:
1692 * (1) P exists in the index. Everything inside the directory P in
1693 * the working tree needs to go when P is checked out from the
1694 * index.
1696 * (2) P does not exist in the index, but there is P/Q in the index.
1697 * We know P will stay a directory when we check out the contents
1698 * of the index, but we do not know yet if there is a directory
1699 * P/Q in the working tree to be killed, so we need to recurse.
1701 * (3) P does not exist in the index, and there is no P/Q in the index
1702 * to require P to be a directory, either. Only in this case, we
1703 * know that everything inside P will not be killed without
1704 * recursing.
1706 if ((dir->flags & DIR_COLLECT_KILLED_ONLY) &&
1707 (dtype == DT_DIR) &&
1708 !has_path_in_index &&
1709 (directory_exists_in_index(istate, path->buf, path->len) == index_nonexistent))
1710 return path_none;
1712 exclude = is_excluded(dir, istate, path->buf, &dtype);
1715 * Excluded? If we don't explicitly want to show
1716 * ignored files, ignore it
1718 if (exclude && !(dir->flags & (DIR_SHOW_IGNORED|DIR_SHOW_IGNORED_TOO)))
1719 return path_excluded;
1721 switch (dtype) {
1722 default:
1723 return path_none;
1724 case DT_DIR:
1725 strbuf_addch(path, '/');
1726 path_treatment = treat_directory(dir, istate, untracked,
1727 path->buf, path->len,
1728 baselen, exclude, pathspec);
1730 * If 1) we only want to return directories that
1731 * match an exclude pattern and 2) this directory does
1732 * not match an exclude pattern but all of its
1733 * contents are excluded, then indicate that we should
1734 * recurse into this directory (instead of marking the
1735 * directory itself as an ignored path).
1737 if (!exclude &&
1738 path_treatment == path_excluded &&
1739 (dir->flags & DIR_SHOW_IGNORED_TOO) &&
1740 (dir->flags & DIR_SHOW_IGNORED_TOO_MODE_MATCHING))
1741 return path_recurse;
1742 return path_treatment;
1743 case DT_REG:
1744 case DT_LNK:
1745 return exclude ? path_excluded : path_untracked;
1749 static enum path_treatment treat_path_fast(struct dir_struct *dir,
1750 struct untracked_cache_dir *untracked,
1751 struct cached_dir *cdir,
1752 struct index_state *istate,
1753 struct strbuf *path,
1754 int baselen,
1755 const struct pathspec *pathspec)
1757 strbuf_setlen(path, baselen);
1758 if (!cdir->ucd) {
1759 strbuf_addstr(path, cdir->file);
1760 return path_untracked;
1762 strbuf_addstr(path, cdir->ucd->name);
1763 /* treat_one_path() does this before it calls treat_directory() */
1764 strbuf_complete(path, '/');
1765 if (cdir->ucd->check_only)
1767 * check_only is set as a result of treat_directory() getting
1768 * to its bottom. Verify again the same set of directories
1769 * with check_only set.
1771 return read_directory_recursive(dir, istate, path->buf, path->len,
1772 cdir->ucd, 1, 0, pathspec);
1774 * We get path_recurse in the first run when
1775 * directory_exists_in_index() returns index_nonexistent. We
1776 * are sure that new changes in the index does not impact the
1777 * outcome. Return now.
1779 return path_recurse;
1782 static enum path_treatment treat_path(struct dir_struct *dir,
1783 struct untracked_cache_dir *untracked,
1784 struct cached_dir *cdir,
1785 struct index_state *istate,
1786 struct strbuf *path,
1787 int baselen,
1788 const struct pathspec *pathspec)
1790 int dtype;
1791 struct dirent *de = cdir->de;
1793 if (!de)
1794 return treat_path_fast(dir, untracked, cdir, istate, path,
1795 baselen, pathspec);
1796 if (is_dot_or_dotdot(de->d_name) || !fspathcmp(de->d_name, ".git"))
1797 return path_none;
1798 strbuf_setlen(path, baselen);
1799 strbuf_addstr(path, de->d_name);
1800 if (simplify_away(path->buf, path->len, pathspec))
1801 return path_none;
1803 dtype = DTYPE(de);
1804 return treat_one_path(dir, untracked, istate, path, baselen, pathspec, dtype, de);
1807 static void add_untracked(struct untracked_cache_dir *dir, const char *name)
1809 if (!dir)
1810 return;
1811 ALLOC_GROW(dir->untracked, dir->untracked_nr + 1,
1812 dir->untracked_alloc);
1813 dir->untracked[dir->untracked_nr++] = xstrdup(name);
1816 static int valid_cached_dir(struct dir_struct *dir,
1817 struct untracked_cache_dir *untracked,
1818 struct index_state *istate,
1819 struct strbuf *path,
1820 int check_only)
1822 struct stat st;
1824 if (!untracked)
1825 return 0;
1828 * With fsmonitor, we can trust the untracked cache's valid field.
1830 refresh_fsmonitor(istate);
1831 if (!(dir->untracked->use_fsmonitor && untracked->valid)) {
1832 if (lstat(path->len ? path->buf : ".", &st)) {
1833 memset(&untracked->stat_data, 0, sizeof(untracked->stat_data));
1834 return 0;
1836 if (!untracked->valid ||
1837 match_stat_data_racy(istate, &untracked->stat_data, &st)) {
1838 fill_stat_data(&untracked->stat_data, &st);
1839 return 0;
1843 if (untracked->check_only != !!check_only)
1844 return 0;
1847 * prep_exclude will be called eventually on this directory,
1848 * but it's called much later in last_exclude_matching(). We
1849 * need it now to determine the validity of the cache for this
1850 * path. The next calls will be nearly no-op, the way
1851 * prep_exclude() is designed.
1853 if (path->len && path->buf[path->len - 1] != '/') {
1854 strbuf_addch(path, '/');
1855 prep_exclude(dir, istate, path->buf, path->len);
1856 strbuf_setlen(path, path->len - 1);
1857 } else
1858 prep_exclude(dir, istate, path->buf, path->len);
1860 /* hopefully prep_exclude() haven't invalidated this entry... */
1861 return untracked->valid;
1864 static int open_cached_dir(struct cached_dir *cdir,
1865 struct dir_struct *dir,
1866 struct untracked_cache_dir *untracked,
1867 struct index_state *istate,
1868 struct strbuf *path,
1869 int check_only)
1871 const char *c_path;
1873 memset(cdir, 0, sizeof(*cdir));
1874 cdir->untracked = untracked;
1875 if (valid_cached_dir(dir, untracked, istate, path, check_only))
1876 return 0;
1877 c_path = path->len ? path->buf : ".";
1878 cdir->fdir = opendir(c_path);
1879 if (!cdir->fdir)
1880 warning_errno(_("could not open directory '%s'"), c_path);
1881 if (dir->untracked) {
1882 invalidate_directory(dir->untracked, untracked);
1883 dir->untracked->dir_opened++;
1885 if (!cdir->fdir)
1886 return -1;
1887 return 0;
1890 static int read_cached_dir(struct cached_dir *cdir)
1892 if (cdir->fdir) {
1893 cdir->de = readdir(cdir->fdir);
1894 if (!cdir->de)
1895 return -1;
1896 return 0;
1898 while (cdir->nr_dirs < cdir->untracked->dirs_nr) {
1899 struct untracked_cache_dir *d = cdir->untracked->dirs[cdir->nr_dirs];
1900 if (!d->recurse) {
1901 cdir->nr_dirs++;
1902 continue;
1904 cdir->ucd = d;
1905 cdir->nr_dirs++;
1906 return 0;
1908 cdir->ucd = NULL;
1909 if (cdir->nr_files < cdir->untracked->untracked_nr) {
1910 struct untracked_cache_dir *d = cdir->untracked;
1911 cdir->file = d->untracked[cdir->nr_files++];
1912 return 0;
1914 return -1;
1917 static void close_cached_dir(struct cached_dir *cdir)
1919 if (cdir->fdir)
1920 closedir(cdir->fdir);
1922 * We have gone through this directory and found no untracked
1923 * entries. Mark it valid.
1925 if (cdir->untracked) {
1926 cdir->untracked->valid = 1;
1927 cdir->untracked->recurse = 1;
1932 * Read a directory tree. We currently ignore anything but
1933 * directories, regular files and symlinks. That's because git
1934 * doesn't handle them at all yet. Maybe that will change some
1935 * day.
1937 * Also, we ignore the name ".git" (even if it is not a directory).
1938 * That likely will not change.
1940 * If 'stop_at_first_file' is specified, 'path_excluded' is returned
1941 * to signal that a file was found. This is the least significant value that
1942 * indicates that a file was encountered that does not depend on the order of
1943 * whether an untracked or exluded path was encountered first.
1945 * Returns the most significant path_treatment value encountered in the scan.
1946 * If 'stop_at_first_file' is specified, `path_excluded` is the most
1947 * significant path_treatment value that will be returned.
1950 static enum path_treatment read_directory_recursive(struct dir_struct *dir,
1951 struct index_state *istate, const char *base, int baselen,
1952 struct untracked_cache_dir *untracked, int check_only,
1953 int stop_at_first_file, const struct pathspec *pathspec)
1955 struct cached_dir cdir;
1956 enum path_treatment state, subdir_state, dir_state = path_none;
1957 struct strbuf path = STRBUF_INIT;
1959 strbuf_add(&path, base, baselen);
1961 if (open_cached_dir(&cdir, dir, untracked, istate, &path, check_only))
1962 goto out;
1964 if (untracked)
1965 untracked->check_only = !!check_only;
1967 while (!read_cached_dir(&cdir)) {
1968 /* check how the file or directory should be treated */
1969 state = treat_path(dir, untracked, &cdir, istate, &path,
1970 baselen, pathspec);
1972 if (state > dir_state)
1973 dir_state = state;
1975 /* recurse into subdir if instructed by treat_path */
1976 if ((state == path_recurse) ||
1977 ((state == path_untracked) &&
1978 (dir->flags & DIR_SHOW_IGNORED_TOO) &&
1979 (get_dtype(cdir.de, istate, path.buf, path.len) == DT_DIR))) {
1980 struct untracked_cache_dir *ud;
1981 ud = lookup_untracked(dir->untracked, untracked,
1982 path.buf + baselen,
1983 path.len - baselen);
1984 subdir_state =
1985 read_directory_recursive(dir, istate, path.buf,
1986 path.len, ud,
1987 check_only, stop_at_first_file, pathspec);
1988 if (subdir_state > dir_state)
1989 dir_state = subdir_state;
1992 if (check_only) {
1993 if (stop_at_first_file) {
1995 * If stopping at first file, then
1996 * signal that a file was found by
1997 * returning `path_excluded`. This is
1998 * to return a consistent value
1999 * regardless of whether an ignored or
2000 * excluded file happened to be
2001 * encountered 1st.
2003 * In current usage, the
2004 * `stop_at_first_file` is passed when
2005 * an ancestor directory has matched
2006 * an exclude pattern, so any found
2007 * files will be excluded.
2009 if (dir_state >= path_excluded) {
2010 dir_state = path_excluded;
2011 break;
2015 /* abort early if maximum state has been reached */
2016 if (dir_state == path_untracked) {
2017 if (cdir.fdir)
2018 add_untracked(untracked, path.buf + baselen);
2019 break;
2021 /* skip the dir_add_* part */
2022 continue;
2025 /* add the path to the appropriate result list */
2026 switch (state) {
2027 case path_excluded:
2028 if (dir->flags & DIR_SHOW_IGNORED)
2029 dir_add_name(dir, istate, path.buf, path.len);
2030 else if ((dir->flags & DIR_SHOW_IGNORED_TOO) ||
2031 ((dir->flags & DIR_COLLECT_IGNORED) &&
2032 exclude_matches_pathspec(path.buf, path.len,
2033 pathspec)))
2034 dir_add_ignored(dir, istate, path.buf, path.len);
2035 break;
2037 case path_untracked:
2038 if (dir->flags & DIR_SHOW_IGNORED)
2039 break;
2040 dir_add_name(dir, istate, path.buf, path.len);
2041 if (cdir.fdir)
2042 add_untracked(untracked, path.buf + baselen);
2043 break;
2045 default:
2046 break;
2049 close_cached_dir(&cdir);
2050 out:
2051 strbuf_release(&path);
2053 return dir_state;
2056 int cmp_dir_entry(const void *p1, const void *p2)
2058 const struct dir_entry *e1 = *(const struct dir_entry **)p1;
2059 const struct dir_entry *e2 = *(const struct dir_entry **)p2;
2061 return name_compare(e1->name, e1->len, e2->name, e2->len);
2064 /* check if *out lexically strictly contains *in */
2065 int check_dir_entry_contains(const struct dir_entry *out, const struct dir_entry *in)
2067 return (out->len < in->len) &&
2068 (out->name[out->len - 1] == '/') &&
2069 !memcmp(out->name, in->name, out->len);
2072 static int treat_leading_path(struct dir_struct *dir,
2073 struct index_state *istate,
2074 const char *path, int len,
2075 const struct pathspec *pathspec)
2077 struct strbuf sb = STRBUF_INIT;
2078 int baselen, rc = 0;
2079 const char *cp;
2080 int old_flags = dir->flags;
2082 while (len && path[len - 1] == '/')
2083 len--;
2084 if (!len)
2085 return 1;
2086 baselen = 0;
2087 dir->flags &= ~DIR_SHOW_OTHER_DIRECTORIES;
2088 while (1) {
2089 cp = path + baselen + !!baselen;
2090 cp = memchr(cp, '/', path + len - cp);
2091 if (!cp)
2092 baselen = len;
2093 else
2094 baselen = cp - path;
2095 strbuf_setlen(&sb, 0);
2096 strbuf_add(&sb, path, baselen);
2097 if (!is_directory(sb.buf))
2098 break;
2099 if (simplify_away(sb.buf, sb.len, pathspec))
2100 break;
2101 if (treat_one_path(dir, NULL, istate, &sb, baselen, pathspec,
2102 DT_DIR, NULL) == path_none)
2103 break; /* do not recurse into it */
2104 if (len <= baselen) {
2105 rc = 1;
2106 break; /* finished checking */
2109 strbuf_release(&sb);
2110 dir->flags = old_flags;
2111 return rc;
2114 static const char *get_ident_string(void)
2116 static struct strbuf sb = STRBUF_INIT;
2117 struct utsname uts;
2119 if (sb.len)
2120 return sb.buf;
2121 if (uname(&uts) < 0)
2122 die_errno(_("failed to get kernel name and information"));
2123 strbuf_addf(&sb, "Location %s, system %s", get_git_work_tree(),
2124 uts.sysname);
2125 return sb.buf;
2128 static int ident_in_untracked(const struct untracked_cache *uc)
2131 * Previous git versions may have saved many NUL separated
2132 * strings in the "ident" field, but it is insane to manage
2133 * many locations, so just take care of the first one.
2136 return !strcmp(uc->ident.buf, get_ident_string());
2139 static void set_untracked_ident(struct untracked_cache *uc)
2141 strbuf_reset(&uc->ident);
2142 strbuf_addstr(&uc->ident, get_ident_string());
2145 * This strbuf used to contain a list of NUL separated
2146 * strings, so save NUL too for backward compatibility.
2148 strbuf_addch(&uc->ident, 0);
2151 static void new_untracked_cache(struct index_state *istate)
2153 struct untracked_cache *uc = xcalloc(1, sizeof(*uc));
2154 strbuf_init(&uc->ident, 100);
2155 uc->exclude_per_dir = ".gitignore";
2156 /* should be the same flags used by git-status */
2157 uc->dir_flags = DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
2158 set_untracked_ident(uc);
2159 istate->untracked = uc;
2160 istate->cache_changed |= UNTRACKED_CHANGED;
2163 void add_untracked_cache(struct index_state *istate)
2165 if (!istate->untracked) {
2166 new_untracked_cache(istate);
2167 } else {
2168 if (!ident_in_untracked(istate->untracked)) {
2169 free_untracked_cache(istate->untracked);
2170 new_untracked_cache(istate);
2175 void remove_untracked_cache(struct index_state *istate)
2177 if (istate->untracked) {
2178 free_untracked_cache(istate->untracked);
2179 istate->untracked = NULL;
2180 istate->cache_changed |= UNTRACKED_CHANGED;
2184 static struct untracked_cache_dir *validate_untracked_cache(struct dir_struct *dir,
2185 int base_len,
2186 const struct pathspec *pathspec)
2188 struct untracked_cache_dir *root;
2189 static int untracked_cache_disabled = -1;
2191 if (!dir->untracked)
2192 return NULL;
2193 if (untracked_cache_disabled < 0)
2194 untracked_cache_disabled = git_env_bool("GIT_DISABLE_UNTRACKED_CACHE", 0);
2195 if (untracked_cache_disabled)
2196 return NULL;
2199 * We only support $GIT_DIR/info/exclude and core.excludesfile
2200 * as the global ignore rule files. Any other additions
2201 * (e.g. from command line) invalidate the cache. This
2202 * condition also catches running setup_standard_excludes()
2203 * before setting dir->untracked!
2205 if (dir->unmanaged_exclude_files)
2206 return NULL;
2209 * Optimize for the main use case only: whole-tree git
2210 * status. More work involved in treat_leading_path() if we
2211 * use cache on just a subset of the worktree. pathspec
2212 * support could make the matter even worse.
2214 if (base_len || (pathspec && pathspec->nr))
2215 return NULL;
2217 /* Different set of flags may produce different results */
2218 if (dir->flags != dir->untracked->dir_flags ||
2220 * See treat_directory(), case index_nonexistent. Without
2221 * this flag, we may need to also cache .git file content
2222 * for the resolve_gitlink_ref() call, which we don't.
2224 !(dir->flags & DIR_SHOW_OTHER_DIRECTORIES) ||
2225 /* We don't support collecting ignore files */
2226 (dir->flags & (DIR_SHOW_IGNORED | DIR_SHOW_IGNORED_TOO |
2227 DIR_COLLECT_IGNORED)))
2228 return NULL;
2231 * If we use .gitignore in the cache and now you change it to
2232 * .gitexclude, everything will go wrong.
2234 if (dir->exclude_per_dir != dir->untracked->exclude_per_dir &&
2235 strcmp(dir->exclude_per_dir, dir->untracked->exclude_per_dir))
2236 return NULL;
2239 * EXC_CMDL is not considered in the cache. If people set it,
2240 * skip the cache.
2242 if (dir->exclude_list_group[EXC_CMDL].nr)
2243 return NULL;
2245 if (!ident_in_untracked(dir->untracked)) {
2246 warning(_("untracked cache is disabled on this system or location"));
2247 return NULL;
2250 if (!dir->untracked->root) {
2251 const int len = sizeof(*dir->untracked->root);
2252 dir->untracked->root = xmalloc(len);
2253 memset(dir->untracked->root, 0, len);
2256 /* Validate $GIT_DIR/info/exclude and core.excludesfile */
2257 root = dir->untracked->root;
2258 if (!oideq(&dir->ss_info_exclude.oid,
2259 &dir->untracked->ss_info_exclude.oid)) {
2260 invalidate_gitignore(dir->untracked, root);
2261 dir->untracked->ss_info_exclude = dir->ss_info_exclude;
2263 if (!oideq(&dir->ss_excludes_file.oid,
2264 &dir->untracked->ss_excludes_file.oid)) {
2265 invalidate_gitignore(dir->untracked, root);
2266 dir->untracked->ss_excludes_file = dir->ss_excludes_file;
2269 /* Make sure this directory is not dropped out at saving phase */
2270 root->recurse = 1;
2271 return root;
2274 int read_directory(struct dir_struct *dir, struct index_state *istate,
2275 const char *path, int len, const struct pathspec *pathspec)
2277 struct untracked_cache_dir *untracked;
2279 trace_performance_enter();
2281 if (has_symlink_leading_path(path, len)) {
2282 trace_performance_leave("read directory %.*s", len, path);
2283 return dir->nr;
2286 untracked = validate_untracked_cache(dir, len, pathspec);
2287 if (!untracked)
2289 * make sure untracked cache code path is disabled,
2290 * e.g. prep_exclude()
2292 dir->untracked = NULL;
2293 if (!len || treat_leading_path(dir, istate, path, len, pathspec))
2294 read_directory_recursive(dir, istate, path, len, untracked, 0, 0, pathspec);
2295 QSORT(dir->entries, dir->nr, cmp_dir_entry);
2296 QSORT(dir->ignored, dir->ignored_nr, cmp_dir_entry);
2299 * If DIR_SHOW_IGNORED_TOO is set, read_directory_recursive() will
2300 * also pick up untracked contents of untracked dirs; by default
2301 * we discard these, but given DIR_KEEP_UNTRACKED_CONTENTS we do not.
2303 if ((dir->flags & DIR_SHOW_IGNORED_TOO) &&
2304 !(dir->flags & DIR_KEEP_UNTRACKED_CONTENTS)) {
2305 int i, j;
2307 /* remove from dir->entries untracked contents of untracked dirs */
2308 for (i = j = 0; j < dir->nr; j++) {
2309 if (i &&
2310 check_dir_entry_contains(dir->entries[i - 1], dir->entries[j])) {
2311 FREE_AND_NULL(dir->entries[j]);
2312 } else {
2313 dir->entries[i++] = dir->entries[j];
2317 dir->nr = i;
2320 trace_performance_leave("read directory %.*s", len, path);
2321 if (dir->untracked) {
2322 static int force_untracked_cache = -1;
2323 static struct trace_key trace_untracked_stats = TRACE_KEY_INIT(UNTRACKED_STATS);
2325 if (force_untracked_cache < 0)
2326 force_untracked_cache =
2327 git_env_bool("GIT_FORCE_UNTRACKED_CACHE", 0);
2328 trace_printf_key(&trace_untracked_stats,
2329 "node creation: %u\n"
2330 "gitignore invalidation: %u\n"
2331 "directory invalidation: %u\n"
2332 "opendir: %u\n",
2333 dir->untracked->dir_created,
2334 dir->untracked->gitignore_invalidated,
2335 dir->untracked->dir_invalidated,
2336 dir->untracked->dir_opened);
2337 if (force_untracked_cache &&
2338 dir->untracked == istate->untracked &&
2339 (dir->untracked->dir_opened ||
2340 dir->untracked->gitignore_invalidated ||
2341 dir->untracked->dir_invalidated))
2342 istate->cache_changed |= UNTRACKED_CHANGED;
2343 if (dir->untracked != istate->untracked) {
2344 FREE_AND_NULL(dir->untracked);
2347 return dir->nr;
2350 int file_exists(const char *f)
2352 struct stat sb;
2353 return lstat(f, &sb) == 0;
2356 static int cmp_icase(char a, char b)
2358 if (a == b)
2359 return 0;
2360 if (ignore_case)
2361 return toupper(a) - toupper(b);
2362 return a - b;
2366 * Given two normalized paths (a trailing slash is ok), if subdir is
2367 * outside dir, return -1. Otherwise return the offset in subdir that
2368 * can be used as relative path to dir.
2370 int dir_inside_of(const char *subdir, const char *dir)
2372 int offset = 0;
2374 assert(dir && subdir && *dir && *subdir);
2376 while (*dir && *subdir && !cmp_icase(*dir, *subdir)) {
2377 dir++;
2378 subdir++;
2379 offset++;
2382 /* hel[p]/me vs hel[l]/yeah */
2383 if (*dir && *subdir)
2384 return -1;
2386 if (!*subdir)
2387 return !*dir ? offset : -1; /* same dir */
2389 /* foo/[b]ar vs foo/[] */
2390 if (is_dir_sep(dir[-1]))
2391 return is_dir_sep(subdir[-1]) ? offset : -1;
2393 /* foo[/]bar vs foo[] */
2394 return is_dir_sep(*subdir) ? offset + 1 : -1;
2397 int is_inside_dir(const char *dir)
2399 char *cwd;
2400 int rc;
2402 if (!dir)
2403 return 0;
2405 cwd = xgetcwd();
2406 rc = (dir_inside_of(cwd, dir) >= 0);
2407 free(cwd);
2408 return rc;
2411 int is_empty_dir(const char *path)
2413 DIR *dir = opendir(path);
2414 struct dirent *e;
2415 int ret = 1;
2417 if (!dir)
2418 return 0;
2420 while ((e = readdir(dir)) != NULL)
2421 if (!is_dot_or_dotdot(e->d_name)) {
2422 ret = 0;
2423 break;
2426 closedir(dir);
2427 return ret;
2430 static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up)
2432 DIR *dir;
2433 struct dirent *e;
2434 int ret = 0, original_len = path->len, len, kept_down = 0;
2435 int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY);
2436 int keep_toplevel = (flag & REMOVE_DIR_KEEP_TOPLEVEL);
2437 struct object_id submodule_head;
2439 if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
2440 !resolve_gitlink_ref(path->buf, "HEAD", &submodule_head)) {
2441 /* Do not descend and nuke a nested git work tree. */
2442 if (kept_up)
2443 *kept_up = 1;
2444 return 0;
2447 flag &= ~REMOVE_DIR_KEEP_TOPLEVEL;
2448 dir = opendir(path->buf);
2449 if (!dir) {
2450 if (errno == ENOENT)
2451 return keep_toplevel ? -1 : 0;
2452 else if (errno == EACCES && !keep_toplevel)
2454 * An empty dir could be removable even if it
2455 * is unreadable:
2457 return rmdir(path->buf);
2458 else
2459 return -1;
2461 strbuf_complete(path, '/');
2463 len = path->len;
2464 while ((e = readdir(dir)) != NULL) {
2465 struct stat st;
2466 if (is_dot_or_dotdot(e->d_name))
2467 continue;
2469 strbuf_setlen(path, len);
2470 strbuf_addstr(path, e->d_name);
2471 if (lstat(path->buf, &st)) {
2472 if (errno == ENOENT)
2474 * file disappeared, which is what we
2475 * wanted anyway
2477 continue;
2478 /* fall thru */
2479 } else if (S_ISDIR(st.st_mode)) {
2480 if (!remove_dir_recurse(path, flag, &kept_down))
2481 continue; /* happy */
2482 } else if (!only_empty &&
2483 (!unlink(path->buf) || errno == ENOENT)) {
2484 continue; /* happy, too */
2487 /* path too long, stat fails, or non-directory still exists */
2488 ret = -1;
2489 break;
2491 closedir(dir);
2493 strbuf_setlen(path, original_len);
2494 if (!ret && !keep_toplevel && !kept_down)
2495 ret = (!rmdir(path->buf) || errno == ENOENT) ? 0 : -1;
2496 else if (kept_up)
2498 * report the uplevel that it is not an error that we
2499 * did not rmdir() our directory.
2501 *kept_up = !ret;
2502 return ret;
2505 int remove_dir_recursively(struct strbuf *path, int flag)
2507 return remove_dir_recurse(path, flag, NULL);
2510 static GIT_PATH_FUNC(git_path_info_exclude, "info/exclude")
2512 void setup_standard_excludes(struct dir_struct *dir)
2514 dir->exclude_per_dir = ".gitignore";
2516 /* core.excludesfile defaulting to $XDG_CONFIG_HOME/git/ignore */
2517 if (!excludes_file)
2518 excludes_file = xdg_config_home("ignore");
2519 if (excludes_file && !access_or_warn(excludes_file, R_OK, 0))
2520 add_excludes_from_file_1(dir, excludes_file,
2521 dir->untracked ? &dir->ss_excludes_file : NULL);
2523 /* per repository user preference */
2524 if (startup_info->have_repository) {
2525 const char *path = git_path_info_exclude();
2526 if (!access_or_warn(path, R_OK, 0))
2527 add_excludes_from_file_1(dir, path,
2528 dir->untracked ? &dir->ss_info_exclude : NULL);
2532 int remove_path(const char *name)
2534 char *slash;
2536 if (unlink(name) && !is_missing_file_error(errno))
2537 return -1;
2539 slash = strrchr(name, '/');
2540 if (slash) {
2541 char *dirs = xstrdup(name);
2542 slash = dirs + (slash - name);
2543 do {
2544 *slash = '\0';
2545 } while (rmdir(dirs) == 0 && (slash = strrchr(dirs, '/')));
2546 free(dirs);
2548 return 0;
2552 * Frees memory within dir which was allocated for exclude lists and
2553 * the exclude_stack. Does not free dir itself.
2555 void clear_directory(struct dir_struct *dir)
2557 int i, j;
2558 struct exclude_list_group *group;
2559 struct exclude_list *el;
2560 struct exclude_stack *stk;
2562 for (i = EXC_CMDL; i <= EXC_FILE; i++) {
2563 group = &dir->exclude_list_group[i];
2564 for (j = 0; j < group->nr; j++) {
2565 el = &group->el[j];
2566 if (i == EXC_DIRS)
2567 free((char *)el->src);
2568 clear_exclude_list(el);
2570 free(group->el);
2573 stk = dir->exclude_stack;
2574 while (stk) {
2575 struct exclude_stack *prev = stk->prev;
2576 free(stk);
2577 stk = prev;
2579 strbuf_release(&dir->basebuf);
2582 struct ondisk_untracked_cache {
2583 struct stat_data info_exclude_stat;
2584 struct stat_data excludes_file_stat;
2585 uint32_t dir_flags;
2586 unsigned char info_exclude_sha1[20];
2587 unsigned char excludes_file_sha1[20];
2588 char exclude_per_dir[FLEX_ARRAY];
2591 #define ouc_offset(x) offsetof(struct ondisk_untracked_cache, x)
2592 #define ouc_size(len) (ouc_offset(exclude_per_dir) + len + 1)
2594 struct write_data {
2595 int index; /* number of written untracked_cache_dir */
2596 struct ewah_bitmap *check_only; /* from untracked_cache_dir */
2597 struct ewah_bitmap *valid; /* from untracked_cache_dir */
2598 struct ewah_bitmap *sha1_valid; /* set if exclude_sha1 is not null */
2599 struct strbuf out;
2600 struct strbuf sb_stat;
2601 struct strbuf sb_sha1;
2604 static void stat_data_to_disk(struct stat_data *to, const struct stat_data *from)
2606 to->sd_ctime.sec = htonl(from->sd_ctime.sec);
2607 to->sd_ctime.nsec = htonl(from->sd_ctime.nsec);
2608 to->sd_mtime.sec = htonl(from->sd_mtime.sec);
2609 to->sd_mtime.nsec = htonl(from->sd_mtime.nsec);
2610 to->sd_dev = htonl(from->sd_dev);
2611 to->sd_ino = htonl(from->sd_ino);
2612 to->sd_uid = htonl(from->sd_uid);
2613 to->sd_gid = htonl(from->sd_gid);
2614 to->sd_size = htonl(from->sd_size);
2617 static void write_one_dir(struct untracked_cache_dir *untracked,
2618 struct write_data *wd)
2620 struct stat_data stat_data;
2621 struct strbuf *out = &wd->out;
2622 unsigned char intbuf[16];
2623 unsigned int intlen, value;
2624 int i = wd->index++;
2627 * untracked_nr should be reset whenever valid is clear, but
2628 * for safety..
2630 if (!untracked->valid) {
2631 untracked->untracked_nr = 0;
2632 untracked->check_only = 0;
2635 if (untracked->check_only)
2636 ewah_set(wd->check_only, i);
2637 if (untracked->valid) {
2638 ewah_set(wd->valid, i);
2639 stat_data_to_disk(&stat_data, &untracked->stat_data);
2640 strbuf_add(&wd->sb_stat, &stat_data, sizeof(stat_data));
2642 if (!is_null_oid(&untracked->exclude_oid)) {
2643 ewah_set(wd->sha1_valid, i);
2644 strbuf_add(&wd->sb_sha1, untracked->exclude_oid.hash,
2645 the_hash_algo->rawsz);
2648 intlen = encode_varint(untracked->untracked_nr, intbuf);
2649 strbuf_add(out, intbuf, intlen);
2651 /* skip non-recurse directories */
2652 for (i = 0, value = 0; i < untracked->dirs_nr; i++)
2653 if (untracked->dirs[i]->recurse)
2654 value++;
2655 intlen = encode_varint(value, intbuf);
2656 strbuf_add(out, intbuf, intlen);
2658 strbuf_add(out, untracked->name, strlen(untracked->name) + 1);
2660 for (i = 0; i < untracked->untracked_nr; i++)
2661 strbuf_add(out, untracked->untracked[i],
2662 strlen(untracked->untracked[i]) + 1);
2664 for (i = 0; i < untracked->dirs_nr; i++)
2665 if (untracked->dirs[i]->recurse)
2666 write_one_dir(untracked->dirs[i], wd);
2669 void write_untracked_extension(struct strbuf *out, struct untracked_cache *untracked)
2671 struct ondisk_untracked_cache *ouc;
2672 struct write_data wd;
2673 unsigned char varbuf[16];
2674 int varint_len;
2675 size_t len = strlen(untracked->exclude_per_dir);
2677 FLEX_ALLOC_MEM(ouc, exclude_per_dir, untracked->exclude_per_dir, len);
2678 stat_data_to_disk(&ouc->info_exclude_stat, &untracked->ss_info_exclude.stat);
2679 stat_data_to_disk(&ouc->excludes_file_stat, &untracked->ss_excludes_file.stat);
2680 hashcpy(ouc->info_exclude_sha1, untracked->ss_info_exclude.oid.hash);
2681 hashcpy(ouc->excludes_file_sha1, untracked->ss_excludes_file.oid.hash);
2682 ouc->dir_flags = htonl(untracked->dir_flags);
2684 varint_len = encode_varint(untracked->ident.len, varbuf);
2685 strbuf_add(out, varbuf, varint_len);
2686 strbuf_addbuf(out, &untracked->ident);
2688 strbuf_add(out, ouc, ouc_size(len));
2689 FREE_AND_NULL(ouc);
2691 if (!untracked->root) {
2692 varint_len = encode_varint(0, varbuf);
2693 strbuf_add(out, varbuf, varint_len);
2694 return;
2697 wd.index = 0;
2698 wd.check_only = ewah_new();
2699 wd.valid = ewah_new();
2700 wd.sha1_valid = ewah_new();
2701 strbuf_init(&wd.out, 1024);
2702 strbuf_init(&wd.sb_stat, 1024);
2703 strbuf_init(&wd.sb_sha1, 1024);
2704 write_one_dir(untracked->root, &wd);
2706 varint_len = encode_varint(wd.index, varbuf);
2707 strbuf_add(out, varbuf, varint_len);
2708 strbuf_addbuf(out, &wd.out);
2709 ewah_serialize_strbuf(wd.valid, out);
2710 ewah_serialize_strbuf(wd.check_only, out);
2711 ewah_serialize_strbuf(wd.sha1_valid, out);
2712 strbuf_addbuf(out, &wd.sb_stat);
2713 strbuf_addbuf(out, &wd.sb_sha1);
2714 strbuf_addch(out, '\0'); /* safe guard for string lists */
2716 ewah_free(wd.valid);
2717 ewah_free(wd.check_only);
2718 ewah_free(wd.sha1_valid);
2719 strbuf_release(&wd.out);
2720 strbuf_release(&wd.sb_stat);
2721 strbuf_release(&wd.sb_sha1);
2724 static void free_untracked(struct untracked_cache_dir *ucd)
2726 int i;
2727 if (!ucd)
2728 return;
2729 for (i = 0; i < ucd->dirs_nr; i++)
2730 free_untracked(ucd->dirs[i]);
2731 for (i = 0; i < ucd->untracked_nr; i++)
2732 free(ucd->untracked[i]);
2733 free(ucd->untracked);
2734 free(ucd->dirs);
2735 free(ucd);
2738 void free_untracked_cache(struct untracked_cache *uc)
2740 if (uc)
2741 free_untracked(uc->root);
2742 free(uc);
2745 struct read_data {
2746 int index;
2747 struct untracked_cache_dir **ucd;
2748 struct ewah_bitmap *check_only;
2749 struct ewah_bitmap *valid;
2750 struct ewah_bitmap *sha1_valid;
2751 const unsigned char *data;
2752 const unsigned char *end;
2755 static void stat_data_from_disk(struct stat_data *to, const unsigned char *data)
2757 memcpy(to, data, sizeof(*to));
2758 to->sd_ctime.sec = ntohl(to->sd_ctime.sec);
2759 to->sd_ctime.nsec = ntohl(to->sd_ctime.nsec);
2760 to->sd_mtime.sec = ntohl(to->sd_mtime.sec);
2761 to->sd_mtime.nsec = ntohl(to->sd_mtime.nsec);
2762 to->sd_dev = ntohl(to->sd_dev);
2763 to->sd_ino = ntohl(to->sd_ino);
2764 to->sd_uid = ntohl(to->sd_uid);
2765 to->sd_gid = ntohl(to->sd_gid);
2766 to->sd_size = ntohl(to->sd_size);
2769 static int read_one_dir(struct untracked_cache_dir **untracked_,
2770 struct read_data *rd)
2772 struct untracked_cache_dir ud, *untracked;
2773 const unsigned char *next, *data = rd->data, *end = rd->end;
2774 unsigned int value;
2775 int i, len;
2777 memset(&ud, 0, sizeof(ud));
2779 next = data;
2780 value = decode_varint(&next);
2781 if (next > end)
2782 return -1;
2783 ud.recurse = 1;
2784 ud.untracked_alloc = value;
2785 ud.untracked_nr = value;
2786 if (ud.untracked_nr)
2787 ALLOC_ARRAY(ud.untracked, ud.untracked_nr);
2788 data = next;
2790 next = data;
2791 ud.dirs_alloc = ud.dirs_nr = decode_varint(&next);
2792 if (next > end)
2793 return -1;
2794 ALLOC_ARRAY(ud.dirs, ud.dirs_nr);
2795 data = next;
2797 len = strlen((const char *)data);
2798 next = data + len + 1;
2799 if (next > rd->end)
2800 return -1;
2801 *untracked_ = untracked = xmalloc(st_add(sizeof(*untracked), len));
2802 memcpy(untracked, &ud, sizeof(ud));
2803 memcpy(untracked->name, data, len + 1);
2804 data = next;
2806 for (i = 0; i < untracked->untracked_nr; i++) {
2807 len = strlen((const char *)data);
2808 next = data + len + 1;
2809 if (next > rd->end)
2810 return -1;
2811 untracked->untracked[i] = xstrdup((const char*)data);
2812 data = next;
2815 rd->ucd[rd->index++] = untracked;
2816 rd->data = data;
2818 for (i = 0; i < untracked->dirs_nr; i++) {
2819 len = read_one_dir(untracked->dirs + i, rd);
2820 if (len < 0)
2821 return -1;
2823 return 0;
2826 static void set_check_only(size_t pos, void *cb)
2828 struct read_data *rd = cb;
2829 struct untracked_cache_dir *ud = rd->ucd[pos];
2830 ud->check_only = 1;
2833 static void read_stat(size_t pos, void *cb)
2835 struct read_data *rd = cb;
2836 struct untracked_cache_dir *ud = rd->ucd[pos];
2837 if (rd->data + sizeof(struct stat_data) > rd->end) {
2838 rd->data = rd->end + 1;
2839 return;
2841 stat_data_from_disk(&ud->stat_data, rd->data);
2842 rd->data += sizeof(struct stat_data);
2843 ud->valid = 1;
2846 static void read_oid(size_t pos, void *cb)
2848 struct read_data *rd = cb;
2849 struct untracked_cache_dir *ud = rd->ucd[pos];
2850 if (rd->data + the_hash_algo->rawsz > rd->end) {
2851 rd->data = rd->end + 1;
2852 return;
2854 hashcpy(ud->exclude_oid.hash, rd->data);
2855 rd->data += the_hash_algo->rawsz;
2858 static void load_oid_stat(struct oid_stat *oid_stat, const unsigned char *data,
2859 const unsigned char *sha1)
2861 stat_data_from_disk(&oid_stat->stat, data);
2862 hashcpy(oid_stat->oid.hash, sha1);
2863 oid_stat->valid = 1;
2866 struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz)
2868 struct untracked_cache *uc;
2869 struct read_data rd;
2870 const unsigned char *next = data, *end = (const unsigned char *)data + sz;
2871 const char *ident;
2872 int ident_len;
2873 ssize_t len;
2874 const char *exclude_per_dir;
2876 if (sz <= 1 || end[-1] != '\0')
2877 return NULL;
2878 end--;
2880 ident_len = decode_varint(&next);
2881 if (next + ident_len > end)
2882 return NULL;
2883 ident = (const char *)next;
2884 next += ident_len;
2886 if (next + ouc_size(0) > end)
2887 return NULL;
2889 uc = xcalloc(1, sizeof(*uc));
2890 strbuf_init(&uc->ident, ident_len);
2891 strbuf_add(&uc->ident, ident, ident_len);
2892 load_oid_stat(&uc->ss_info_exclude,
2893 next + ouc_offset(info_exclude_stat),
2894 next + ouc_offset(info_exclude_sha1));
2895 load_oid_stat(&uc->ss_excludes_file,
2896 next + ouc_offset(excludes_file_stat),
2897 next + ouc_offset(excludes_file_sha1));
2898 uc->dir_flags = get_be32(next + ouc_offset(dir_flags));
2899 exclude_per_dir = (const char *)next + ouc_offset(exclude_per_dir);
2900 uc->exclude_per_dir = xstrdup(exclude_per_dir);
2901 /* NUL after exclude_per_dir is covered by sizeof(*ouc) */
2902 next += ouc_size(strlen(exclude_per_dir));
2903 if (next >= end)
2904 goto done2;
2906 len = decode_varint(&next);
2907 if (next > end || len == 0)
2908 goto done2;
2910 rd.valid = ewah_new();
2911 rd.check_only = ewah_new();
2912 rd.sha1_valid = ewah_new();
2913 rd.data = next;
2914 rd.end = end;
2915 rd.index = 0;
2916 ALLOC_ARRAY(rd.ucd, len);
2918 if (read_one_dir(&uc->root, &rd) || rd.index != len)
2919 goto done;
2921 next = rd.data;
2922 len = ewah_read_mmap(rd.valid, next, end - next);
2923 if (len < 0)
2924 goto done;
2926 next += len;
2927 len = ewah_read_mmap(rd.check_only, next, end - next);
2928 if (len < 0)
2929 goto done;
2931 next += len;
2932 len = ewah_read_mmap(rd.sha1_valid, next, end - next);
2933 if (len < 0)
2934 goto done;
2936 ewah_each_bit(rd.check_only, set_check_only, &rd);
2937 rd.data = next + len;
2938 ewah_each_bit(rd.valid, read_stat, &rd);
2939 ewah_each_bit(rd.sha1_valid, read_oid, &rd);
2940 next = rd.data;
2942 done:
2943 free(rd.ucd);
2944 ewah_free(rd.valid);
2945 ewah_free(rd.check_only);
2946 ewah_free(rd.sha1_valid);
2947 done2:
2948 if (next != end) {
2949 free_untracked_cache(uc);
2950 uc = NULL;
2952 return uc;
2955 static void invalidate_one_directory(struct untracked_cache *uc,
2956 struct untracked_cache_dir *ucd)
2958 uc->dir_invalidated++;
2959 ucd->valid = 0;
2960 ucd->untracked_nr = 0;
2964 * Normally when an entry is added or removed from a directory,
2965 * invalidating that directory is enough. No need to touch its
2966 * ancestors. When a directory is shown as "foo/bar/" in git-status
2967 * however, deleting or adding an entry may have cascading effect.
2969 * Say the "foo/bar/file" has become untracked, we need to tell the
2970 * untracked_cache_dir of "foo" that "bar/" is not an untracked
2971 * directory any more (because "bar" is managed by foo as an untracked
2972 * "file").
2974 * Similarly, if "foo/bar/file" moves from untracked to tracked and it
2975 * was the last untracked entry in the entire "foo", we should show
2976 * "foo/" instead. Which means we have to invalidate past "bar" up to
2977 * "foo".
2979 * This function traverses all directories from root to leaf. If there
2980 * is a chance of one of the above cases happening, we invalidate back
2981 * to root. Otherwise we just invalidate the leaf. There may be a more
2982 * sophisticated way than checking for SHOW_OTHER_DIRECTORIES to
2983 * detect these cases and avoid unnecessary invalidation, for example,
2984 * checking for the untracked entry named "bar/" in "foo", but for now
2985 * stick to something safe and simple.
2987 static int invalidate_one_component(struct untracked_cache *uc,
2988 struct untracked_cache_dir *dir,
2989 const char *path, int len)
2991 const char *rest = strchr(path, '/');
2993 if (rest) {
2994 int component_len = rest - path;
2995 struct untracked_cache_dir *d =
2996 lookup_untracked(uc, dir, path, component_len);
2997 int ret =
2998 invalidate_one_component(uc, d, rest + 1,
2999 len - (component_len + 1));
3000 if (ret)
3001 invalidate_one_directory(uc, dir);
3002 return ret;
3005 invalidate_one_directory(uc, dir);
3006 return uc->dir_flags & DIR_SHOW_OTHER_DIRECTORIES;
3009 void untracked_cache_invalidate_path(struct index_state *istate,
3010 const char *path, int safe_path)
3012 if (!istate->untracked || !istate->untracked->root)
3013 return;
3014 if (!safe_path && !verify_path(path, 0))
3015 return;
3016 invalidate_one_component(istate->untracked, istate->untracked->root,
3017 path, strlen(path));
3020 void untracked_cache_remove_from_index(struct index_state *istate,
3021 const char *path)
3023 untracked_cache_invalidate_path(istate, path, 1);
3026 void untracked_cache_add_to_index(struct index_state *istate,
3027 const char *path)
3029 untracked_cache_invalidate_path(istate, path, 1);
3032 static void connect_wt_gitdir_in_nested(const char *sub_worktree,
3033 const char *sub_gitdir)
3035 int i;
3036 struct repository subrepo;
3037 struct strbuf sub_wt = STRBUF_INIT;
3038 struct strbuf sub_gd = STRBUF_INIT;
3040 const struct submodule *sub;
3042 /* If the submodule has no working tree, we can ignore it. */
3043 if (repo_init(&subrepo, sub_gitdir, sub_worktree))
3044 return;
3046 if (repo_read_index(&subrepo) < 0)
3047 die(_("index file corrupt in repo %s"), subrepo.gitdir);
3049 for (i = 0; i < subrepo.index->cache_nr; i++) {
3050 const struct cache_entry *ce = subrepo.index->cache[i];
3052 if (!S_ISGITLINK(ce->ce_mode))
3053 continue;
3055 while (i + 1 < subrepo.index->cache_nr &&
3056 !strcmp(ce->name, subrepo.index->cache[i + 1]->name))
3058 * Skip entries with the same name in different stages
3059 * to make sure an entry is returned only once.
3061 i++;
3063 sub = submodule_from_path(&subrepo, &null_oid, ce->name);
3064 if (!sub || !is_submodule_active(&subrepo, ce->name))
3065 /* .gitmodules broken or inactive sub */
3066 continue;
3068 strbuf_reset(&sub_wt);
3069 strbuf_reset(&sub_gd);
3070 strbuf_addf(&sub_wt, "%s/%s", sub_worktree, sub->path);
3071 strbuf_addf(&sub_gd, "%s/modules/%s", sub_gitdir, sub->name);
3073 connect_work_tree_and_git_dir(sub_wt.buf, sub_gd.buf, 1);
3075 strbuf_release(&sub_wt);
3076 strbuf_release(&sub_gd);
3077 repo_clear(&subrepo);
3080 void connect_work_tree_and_git_dir(const char *work_tree_,
3081 const char *git_dir_,
3082 int recurse_into_nested)
3084 struct strbuf gitfile_sb = STRBUF_INIT;
3085 struct strbuf cfg_sb = STRBUF_INIT;
3086 struct strbuf rel_path = STRBUF_INIT;
3087 char *git_dir, *work_tree;
3089 /* Prepare .git file */
3090 strbuf_addf(&gitfile_sb, "%s/.git", work_tree_);
3091 if (safe_create_leading_directories_const(gitfile_sb.buf))
3092 die(_("could not create directories for %s"), gitfile_sb.buf);
3094 /* Prepare config file */
3095 strbuf_addf(&cfg_sb, "%s/config", git_dir_);
3096 if (safe_create_leading_directories_const(cfg_sb.buf))
3097 die(_("could not create directories for %s"), cfg_sb.buf);
3099 git_dir = real_pathdup(git_dir_, 1);
3100 work_tree = real_pathdup(work_tree_, 1);
3102 /* Write .git file */
3103 write_file(gitfile_sb.buf, "gitdir: %s",
3104 relative_path(git_dir, work_tree, &rel_path));
3105 /* Update core.worktree setting */
3106 git_config_set_in_file(cfg_sb.buf, "core.worktree",
3107 relative_path(work_tree, git_dir, &rel_path));
3109 strbuf_release(&gitfile_sb);
3110 strbuf_release(&cfg_sb);
3111 strbuf_release(&rel_path);
3113 if (recurse_into_nested)
3114 connect_wt_gitdir_in_nested(work_tree, git_dir);
3116 free(work_tree);
3117 free(git_dir);
3121 * Migrate the git directory of the given path from old_git_dir to new_git_dir.
3123 void relocate_gitdir(const char *path, const char *old_git_dir, const char *new_git_dir)
3125 if (rename(old_git_dir, new_git_dir) < 0)
3126 die_errno(_("could not migrate git directory from '%s' to '%s'"),
3127 old_git_dir, new_git_dir);
3129 connect_work_tree_and_git_dir(path, new_git_dir, 0);