2 * This handles recursive filename detection with exclude
3 * files, index knowledge etc..
5 * See Documentation/technical/api-directory-listing.txt
7 * Copyright (C) Linus Torvalds, 2005-2006
8 * Junio Hamano, 2005-2006
10 #define NO_THE_INDEX_COMPATIBILITY_MACROS
16 #include "wildmatch.h"
20 #include "ewah/ewok.h"
23 * Tells read_directory_recursive how a file or directory should be treated.
24 * Values are ordered by significance, e.g. if a directory contains both
25 * excluded and untracked files, it is listed as untracked because
26 * path_untracked > path_excluded.
36 * Support data structure for our opendir/readdir/closedir wrappers
40 struct untracked_cache_dir *untracked;
46 struct untracked_cache_dir *ucd;
49 static enum path_treatment read_directory_recursive(struct dir_struct *dir,
50 struct index_state *istate, const char *path, int len,
51 struct untracked_cache_dir *untracked,
52 int check_only, const struct pathspec *pathspec);
53 static int get_dtype(struct dirent *de, struct index_state *istate,
54 const char *path, int len);
56 int count_slashes(const char *s)
65 int fspathcmp(const char *a, const char *b)
67 return ignore_case ? strcasecmp(a, b) : strcmp(a, b);
70 int fspathncmp(const char *a, const char *b, size_t count)
72 return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
75 int git_fnmatch(const struct pathspec_item *item,
76 const char *pattern, const char *string,
80 if (ps_strncmp(item, pattern, string, prefix))
85 if (item->flags & PATHSPEC_ONESTAR) {
86 int pattern_len = strlen(++pattern);
87 int string_len = strlen(string);
88 return string_len < pattern_len ||
89 ps_strcmp(item, pattern,
90 string + string_len - pattern_len);
92 if (item->magic & PATHSPEC_GLOB)
93 return wildmatch(pattern, string,
95 (item->magic & PATHSPEC_ICASE ? WM_CASEFOLD : 0));
97 /* wildmatch has not learned no FNM_PATHNAME mode yet */
98 return wildmatch(pattern, string,
99 item->magic & PATHSPEC_ICASE ? WM_CASEFOLD : 0);
102 static int fnmatch_icase_mem(const char *pattern, int patternlen,
103 const char *string, int stringlen,
107 struct strbuf pat_buf = STRBUF_INIT;
108 struct strbuf str_buf = STRBUF_INIT;
109 const char *use_pat = pattern;
110 const char *use_str = string;
112 if (pattern[patternlen]) {
113 strbuf_add(&pat_buf, pattern, patternlen);
114 use_pat = pat_buf.buf;
116 if (string[stringlen]) {
117 strbuf_add(&str_buf, string, stringlen);
118 use_str = str_buf.buf;
122 flags |= WM_CASEFOLD;
123 match_status = wildmatch(use_pat, use_str, flags);
125 strbuf_release(&pat_buf);
126 strbuf_release(&str_buf);
131 static size_t common_prefix_len(const struct pathspec *pathspec)
137 * ":(icase)path" is treated as a pathspec full of
138 * wildcard. In other words, only prefix is considered common
139 * prefix. If the pathspec is abc/foo abc/bar, running in
140 * subdir xyz, the common prefix is still xyz, not xuz/abc as
143 GUARD_PATHSPEC(pathspec,
152 for (n = 0; n < pathspec->nr; n++) {
153 size_t i = 0, len = 0, item_len;
154 if (pathspec->items[n].magic & PATHSPEC_EXCLUDE)
156 if (pathspec->items[n].magic & PATHSPEC_ICASE)
157 item_len = pathspec->items[n].prefix;
159 item_len = pathspec->items[n].nowildcard_len;
160 while (i < item_len && (n == 0 || i < max)) {
161 char c = pathspec->items[n].match[i];
162 if (c != pathspec->items[0].match[i])
168 if (n == 0 || len < max) {
178 * Returns a copy of the longest leading path common among all
181 char *common_prefix(const struct pathspec *pathspec)
183 unsigned long len = common_prefix_len(pathspec);
185 return len ? xmemdupz(pathspec->items[0].match, len) : NULL;
188 int fill_directory(struct dir_struct *dir,
189 struct index_state *istate,
190 const struct pathspec *pathspec)
196 * Calculate common prefix for the pathspec, and
197 * use that to optimize the directory walk
199 prefix_len = common_prefix_len(pathspec);
200 prefix = prefix_len ? pathspec->items[0].match : "";
202 /* Read the directory and prune it */
203 read_directory(dir, istate, prefix, prefix_len, pathspec);
208 int within_depth(const char *name, int namelen,
209 int depth, int max_depth)
211 const char *cp = name, *cpe = name + namelen;
217 if (depth > max_depth)
223 #define DO_MATCH_EXCLUDE (1<<0)
224 #define DO_MATCH_DIRECTORY (1<<1)
225 #define DO_MATCH_SUBMODULE (1<<2)
227 static int match_attrs(const char *name, int namelen,
228 const struct pathspec_item *item)
232 git_check_attr(name, item->attr_check);
233 for (i = 0; i < item->attr_match_nr; i++) {
236 enum attr_match_mode match_mode;
238 value = item->attr_check->items[i].value;
239 match_mode = item->attr_match[i].match_mode;
241 if (ATTR_TRUE(value))
242 matched = (match_mode == MATCH_SET);
243 else if (ATTR_FALSE(value))
244 matched = (match_mode == MATCH_UNSET);
245 else if (ATTR_UNSET(value))
246 matched = (match_mode == MATCH_UNSPECIFIED);
248 matched = (match_mode == MATCH_VALUE &&
249 !strcmp(item->attr_match[i].value, value));
258 * Does 'match' match the given name?
259 * A match is found if
261 * (1) the 'match' string is leading directory of 'name', or
262 * (2) the 'match' string is a wildcard and matches 'name', or
263 * (3) the 'match' string is exactly the same as 'name'.
265 * and the return value tells which case it was.
267 * It returns 0 when there is no match.
269 static int match_pathspec_item(const struct pathspec_item *item, int prefix,
270 const char *name, int namelen, unsigned flags)
272 /* name/namelen has prefix cut off by caller */
273 const char *match = item->match + prefix;
274 int matchlen = item->len - prefix;
277 * The normal call pattern is:
278 * 1. prefix = common_prefix_len(ps);
279 * 2. prune something, or fill_directory
280 * 3. match_pathspec()
282 * 'prefix' at #1 may be shorter than the command's prefix and
283 * it's ok for #2 to match extra files. Those extras will be
286 * Suppose the pathspec is 'foo' and '../bar' running from
287 * subdir 'xyz'. The common prefix at #1 will be empty, thanks
288 * to "../". We may have xyz/foo _and_ XYZ/foo after #2. The
289 * user does not want XYZ/foo, only the "foo" part should be
290 * case-insensitive. We need to filter out XYZ/foo here. In
291 * other words, we do not trust the caller on comparing the
292 * prefix part when :(icase) is involved. We do exact
293 * comparison ourselves.
295 * Normally the caller (common_prefix_len() in fact) does
296 * _exact_ matching on name[-prefix+1..-1] and we do not need
297 * to check that part. Be defensive and check it anyway, in
298 * case common_prefix_len is changed, or a new caller is
299 * introduced that does not use common_prefix_len.
301 * If the penalty turns out too high when prefix is really
302 * long, maybe change it to
303 * strncmp(match, name, item->prefix - prefix)
305 if (item->prefix && (item->magic & PATHSPEC_ICASE) &&
306 strncmp(item->match, name - prefix, item->prefix))
309 if (item->attr_match_nr && !match_attrs(name, namelen, item))
312 /* If the match was just the prefix, we matched */
314 return MATCHED_RECURSIVELY;
316 if (matchlen <= namelen && !ps_strncmp(item, match, name, matchlen)) {
317 if (matchlen == namelen)
318 return MATCHED_EXACTLY;
320 if (match[matchlen-1] == '/' || name[matchlen] == '/')
321 return MATCHED_RECURSIVELY;
322 } else if ((flags & DO_MATCH_DIRECTORY) &&
323 match[matchlen - 1] == '/' &&
324 namelen == matchlen - 1 &&
325 !ps_strncmp(item, match, name, namelen))
326 return MATCHED_EXACTLY;
328 if (item->nowildcard_len < item->len &&
329 !git_fnmatch(item, match, name,
330 item->nowildcard_len - prefix))
331 return MATCHED_FNMATCH;
333 /* Perform checks to see if "name" is a super set of the pathspec */
334 if (flags & DO_MATCH_SUBMODULE) {
335 /* name is a literal prefix of the pathspec */
336 if ((namelen < matchlen) &&
337 (match[namelen] == '/') &&
338 !ps_strncmp(item, match, name, namelen))
339 return MATCHED_RECURSIVELY;
341 /* name" doesn't match up to the first wild character */
342 if (item->nowildcard_len < item->len &&
343 ps_strncmp(item, match, name,
344 item->nowildcard_len - prefix))
348 * Here is where we would perform a wildmatch to check if
349 * "name" can be matched as a directory (or a prefix) against
350 * the pathspec. Since wildmatch doesn't have this capability
351 * at the present we have to punt and say that it is a match,
352 * potentially returning a false positive
353 * The submodules themselves will be able to perform more
354 * accurate matching to determine if the pathspec matches.
356 return MATCHED_RECURSIVELY;
363 * Given a name and a list of pathspecs, returns the nature of the
364 * closest (i.e. most specific) match of the name to any of the
367 * The caller typically calls this multiple times with the same
368 * pathspec and seen[] array but with different name/namelen
369 * (e.g. entries from the index) and is interested in seeing if and
370 * how each pathspec matches all the names it calls this function
371 * with. A mark is left in the seen[] array for each pathspec element
372 * indicating the closest type of match that element achieved, so if
373 * seen[n] remains zero after multiple invocations, that means the nth
374 * pathspec did not match any names, which could indicate that the
375 * user mistyped the nth pathspec.
377 static int do_match_pathspec(const struct pathspec *ps,
378 const char *name, int namelen,
379 int prefix, char *seen,
382 int i, retval = 0, exclude = flags & DO_MATCH_EXCLUDE;
394 if (!ps->recursive ||
395 !(ps->magic & PATHSPEC_MAXDEPTH) ||
397 return MATCHED_RECURSIVELY;
399 if (within_depth(name, namelen, 0, ps->max_depth))
400 return MATCHED_EXACTLY;
408 for (i = ps->nr - 1; i >= 0; i--) {
411 if ((!exclude && ps->items[i].magic & PATHSPEC_EXCLUDE) ||
412 ( exclude && !(ps->items[i].magic & PATHSPEC_EXCLUDE)))
415 if (seen && seen[i] == MATCHED_EXACTLY)
418 * Make exclude patterns optional and never report
419 * "pathspec ':(exclude)foo' matches no files"
421 if (seen && ps->items[i].magic & PATHSPEC_EXCLUDE)
422 seen[i] = MATCHED_FNMATCH;
423 how = match_pathspec_item(ps->items+i, prefix, name,
426 (ps->magic & PATHSPEC_MAXDEPTH) &&
427 ps->max_depth != -1 &&
428 how && how != MATCHED_FNMATCH) {
429 int len = ps->items[i].len;
430 if (name[len] == '/')
432 if (within_depth(name+len, namelen-len, 0, ps->max_depth))
433 how = MATCHED_EXACTLY;
440 if (seen && seen[i] < how)
447 int match_pathspec(const struct pathspec *ps,
448 const char *name, int namelen,
449 int prefix, char *seen, int is_dir)
451 int positive, negative;
452 unsigned flags = is_dir ? DO_MATCH_DIRECTORY : 0;
453 positive = do_match_pathspec(ps, name, namelen,
454 prefix, seen, flags);
455 if (!(ps->magic & PATHSPEC_EXCLUDE) || !positive)
457 negative = do_match_pathspec(ps, name, namelen,
459 flags | DO_MATCH_EXCLUDE);
460 return negative ? 0 : positive;
464 * Check if a submodule is a superset of the pathspec
466 int submodule_path_match(const struct pathspec *ps,
467 const char *submodule_name,
470 int matched = do_match_pathspec(ps, submodule_name,
471 strlen(submodule_name),
478 int report_path_error(const char *ps_matched,
479 const struct pathspec *pathspec,
483 * Make sure all pathspec matched; otherwise it is an error.
486 for (num = 0; num < pathspec->nr; num++) {
487 int other, found_dup;
492 * The caller might have fed identical pathspec
493 * twice. Do not barf on such a mistake.
494 * FIXME: parse_pathspec should have eliminated
495 * duplicate pathspec.
497 for (found_dup = other = 0;
498 !found_dup && other < pathspec->nr;
500 if (other == num || !ps_matched[other])
502 if (!strcmp(pathspec->items[other].original,
503 pathspec->items[num].original))
505 * Ok, we have a match already.
512 error("pathspec '%s' did not match any file(s) known to git.",
513 pathspec->items[num].original);
520 * Return the length of the "simple" part of a path match limiter.
522 int simple_length(const char *match)
527 unsigned char c = *match++;
529 if (c == '\0' || is_glob_special(c))
534 int no_wildcard(const char *string)
536 return string[simple_length(string)] == '\0';
539 void parse_exclude_pattern(const char **pattern,
544 const char *p = *pattern;
549 *flags |= EXC_FLAG_NEGATIVE;
553 if (len && p[len - 1] == '/') {
555 *flags |= EXC_FLAG_MUSTBEDIR;
557 for (i = 0; i < len; i++) {
562 *flags |= EXC_FLAG_NODIR;
563 *nowildcardlen = simple_length(p);
565 * we should have excluded the trailing slash from 'p' too,
566 * but that's one more allocation. Instead just make sure
567 * nowildcardlen does not exceed real patternlen
569 if (*nowildcardlen > len)
570 *nowildcardlen = len;
571 if (*p == '*' && no_wildcard(p + 1))
572 *flags |= EXC_FLAG_ENDSWITH;
577 void add_exclude(const char *string, const char *base,
578 int baselen, struct exclude_list *el, int srcpos)
585 parse_exclude_pattern(&string, &patternlen, &flags, &nowildcardlen);
586 if (flags & EXC_FLAG_MUSTBEDIR) {
587 FLEXPTR_ALLOC_MEM(x, pattern, string, patternlen);
589 x = xmalloc(sizeof(*x));
592 x->patternlen = patternlen;
593 x->nowildcardlen = nowildcardlen;
595 x->baselen = baselen;
598 ALLOC_GROW(el->excludes, el->nr + 1, el->alloc);
599 el->excludes[el->nr++] = x;
603 static void *read_skip_worktree_file_from_index(const struct index_state *istate,
604 const char *path, size_t *size,
605 struct sha1_stat *sha1_stat)
609 enum object_type type;
613 pos = index_name_pos(istate, path, len);
616 if (!ce_skip_worktree(istate->cache[pos]))
618 data = read_sha1_file(istate->cache[pos]->oid.hash, &type, &sz);
619 if (!data || type != OBJ_BLOB) {
625 memset(&sha1_stat->stat, 0, sizeof(sha1_stat->stat));
626 hashcpy(sha1_stat->sha1, istate->cache[pos]->oid.hash);
632 * Frees memory within el which was allocated for exclude patterns and
633 * the file buffer. Does not free el itself.
635 void clear_exclude_list(struct exclude_list *el)
639 for (i = 0; i < el->nr; i++)
640 free(el->excludes[i]);
644 memset(el, 0, sizeof(*el));
647 static void trim_trailing_spaces(char *buf)
649 char *p, *last_space = NULL;
651 for (p = buf; *p; p++)
671 * Given a subdirectory name and "dir" of the current directory,
672 * search the subdir in "dir" and return it, or create a new one if it
673 * does not exist in "dir".
675 * If "name" has the trailing slash, it'll be excluded in the search.
677 static struct untracked_cache_dir *lookup_untracked(struct untracked_cache *uc,
678 struct untracked_cache_dir *dir,
679 const char *name, int len)
682 struct untracked_cache_dir *d;
685 if (len && name[len - 1] == '/')
689 while (last > first) {
690 int cmp, next = (last + first) >> 1;
692 cmp = strncmp(name, d->name, len);
693 if (!cmp && strlen(d->name) > len)
705 FLEX_ALLOC_MEM(d, name, name, len);
707 ALLOC_GROW(dir->dirs, dir->dirs_nr + 1, dir->dirs_alloc);
708 memmove(dir->dirs + first + 1, dir->dirs + first,
709 (dir->dirs_nr - first) * sizeof(*dir->dirs));
711 dir->dirs[first] = d;
715 static void do_invalidate_gitignore(struct untracked_cache_dir *dir)
719 dir->untracked_nr = 0;
720 for (i = 0; i < dir->dirs_nr; i++)
721 do_invalidate_gitignore(dir->dirs[i]);
724 static void invalidate_gitignore(struct untracked_cache *uc,
725 struct untracked_cache_dir *dir)
727 uc->gitignore_invalidated++;
728 do_invalidate_gitignore(dir);
731 static void invalidate_directory(struct untracked_cache *uc,
732 struct untracked_cache_dir *dir)
735 uc->dir_invalidated++;
737 dir->untracked_nr = 0;
738 for (i = 0; i < dir->dirs_nr; i++)
739 dir->dirs[i]->recurse = 0;
743 * Given a file with name "fname", read it (either from disk, or from
744 * an index if 'istate' is non-null), parse it and store the
745 * exclude rules in "el".
747 * If "ss" is not NULL, compute SHA-1 of the exclude file and fill
748 * stat data from disk (only valid if add_excludes returns zero). If
749 * ss_valid is non-zero, "ss" must contain good value as input.
751 static int add_excludes(const char *fname, const char *base, int baselen,
752 struct exclude_list *el,
753 struct index_state *istate,
754 struct sha1_stat *sha1_stat)
757 int fd, i, lineno = 1;
761 fd = open(fname, O_RDONLY);
762 if (fd < 0 || fstat(fd, &st) < 0) {
764 warn_on_fopen_errors(fname);
768 (buf = read_skip_worktree_file_from_index(istate, fname, &size, sha1_stat)) == NULL)
774 if (buf[size-1] != '\n') {
775 buf = xrealloc(buf, st_add(size, 1));
779 size = xsize_t(st.st_size);
782 fill_stat_data(&sha1_stat->stat, &st);
783 hashcpy(sha1_stat->sha1, EMPTY_BLOB_SHA1_BIN);
784 sha1_stat->valid = 1;
789 buf = xmallocz(size);
790 if (read_in_full(fd, buf, size) != size) {
799 if (sha1_stat->valid &&
800 !match_stat_data_racy(istate, &sha1_stat->stat, &st))
801 ; /* no content change, ss->sha1 still good */
803 (pos = index_name_pos(istate, fname, strlen(fname))) >= 0 &&
804 !ce_stage(istate->cache[pos]) &&
805 ce_uptodate(istate->cache[pos]) &&
806 !would_convert_to_git(istate, fname))
807 hashcpy(sha1_stat->sha1,
808 istate->cache[pos]->oid.hash);
810 hash_sha1_file(buf, size, "blob", sha1_stat->sha1);
811 fill_stat_data(&sha1_stat->stat, &st);
812 sha1_stat->valid = 1;
818 if (skip_utf8_bom(&buf, size))
819 size -= buf - el->filebuf;
823 for (i = 0; i < size; i++) {
824 if (buf[i] == '\n') {
825 if (entry != buf + i && entry[0] != '#') {
826 buf[i - (i && buf[i-1] == '\r')] = 0;
827 trim_trailing_spaces(entry);
828 add_exclude(entry, base, baselen, el, lineno);
837 int add_excludes_from_file_to_list(const char *fname, const char *base,
838 int baselen, struct exclude_list *el,
839 struct index_state *istate)
841 return add_excludes(fname, base, baselen, el, istate, NULL);
844 struct exclude_list *add_exclude_list(struct dir_struct *dir,
845 int group_type, const char *src)
847 struct exclude_list *el;
848 struct exclude_list_group *group;
850 group = &dir->exclude_list_group[group_type];
851 ALLOC_GROW(group->el, group->nr + 1, group->alloc);
852 el = &group->el[group->nr++];
853 memset(el, 0, sizeof(*el));
859 * Used to set up core.excludesfile and .git/info/exclude lists.
861 static void add_excludes_from_file_1(struct dir_struct *dir, const char *fname,
862 struct sha1_stat *sha1_stat)
864 struct exclude_list *el;
866 * catch setup_standard_excludes() that's called before
867 * dir->untracked is assigned. That function behaves
868 * differently when dir->untracked is non-NULL.
871 dir->unmanaged_exclude_files++;
872 el = add_exclude_list(dir, EXC_FILE, fname);
873 if (add_excludes(fname, "", 0, el, NULL, sha1_stat) < 0)
874 die("cannot use %s as an exclude file", fname);
877 void add_excludes_from_file(struct dir_struct *dir, const char *fname)
879 dir->unmanaged_exclude_files++; /* see validate_untracked_cache() */
880 add_excludes_from_file_1(dir, fname, NULL);
883 int match_basename(const char *basename, int basenamelen,
884 const char *pattern, int prefix, int patternlen,
887 if (prefix == patternlen) {
888 if (patternlen == basenamelen &&
889 !fspathncmp(pattern, basename, basenamelen))
891 } else if (flags & EXC_FLAG_ENDSWITH) {
892 /* "*literal" matching against "fooliteral" */
893 if (patternlen - 1 <= basenamelen &&
894 !fspathncmp(pattern + 1,
895 basename + basenamelen - (patternlen - 1),
899 if (fnmatch_icase_mem(pattern, patternlen,
900 basename, basenamelen,
907 int match_pathname(const char *pathname, int pathlen,
908 const char *base, int baselen,
909 const char *pattern, int prefix, int patternlen,
916 * match with FNM_PATHNAME; the pattern has base implicitly
919 if (*pattern == '/') {
926 * baselen does not count the trailing slash. base[] may or
927 * may not end with a trailing slash though.
929 if (pathlen < baselen + 1 ||
930 (baselen && pathname[baselen] != '/') ||
931 fspathncmp(pathname, base, baselen))
934 namelen = baselen ? pathlen - baselen - 1 : pathlen;
935 name = pathname + pathlen - namelen;
939 * if the non-wildcard part is longer than the
940 * remaining pathname, surely it cannot match.
942 if (prefix > namelen)
945 if (fspathncmp(pattern, name, prefix))
948 patternlen -= prefix;
953 * If the whole pattern did not have a wildcard,
954 * then our prefix match is all we need; we
955 * do not need to call fnmatch at all.
957 if (!patternlen && !namelen)
961 return fnmatch_icase_mem(pattern, patternlen,
967 * Scan the given exclude list in reverse to see whether pathname
968 * should be ignored. The first match (i.e. the last on the list), if
969 * any, determines the fate. Returns the exclude_list element which
970 * matched, or NULL for undecided.
972 static struct exclude *last_exclude_matching_from_list(const char *pathname,
974 const char *basename,
976 struct exclude_list *el,
977 struct index_state *istate)
979 struct exclude *exc = NULL; /* undecided */
983 return NULL; /* undefined */
985 for (i = el->nr - 1; 0 <= i; i--) {
986 struct exclude *x = el->excludes[i];
987 const char *exclude = x->pattern;
988 int prefix = x->nowildcardlen;
990 if (x->flags & EXC_FLAG_MUSTBEDIR) {
991 if (*dtype == DT_UNKNOWN)
992 *dtype = get_dtype(NULL, istate, pathname, pathlen);
993 if (*dtype != DT_DIR)
997 if (x->flags & EXC_FLAG_NODIR) {
998 if (match_basename(basename,
999 pathlen - (basename - pathname),
1000 exclude, prefix, x->patternlen,
1008 assert(x->baselen == 0 || x->base[x->baselen - 1] == '/');
1009 if (match_pathname(pathname, pathlen,
1010 x->base, x->baselen ? x->baselen - 1 : 0,
1011 exclude, prefix, x->patternlen, x->flags)) {
1020 * Scan the list and let the last match determine the fate.
1021 * Return 1 for exclude, 0 for include and -1 for undecided.
1023 int is_excluded_from_list(const char *pathname,
1024 int pathlen, const char *basename, int *dtype,
1025 struct exclude_list *el, struct index_state *istate)
1027 struct exclude *exclude;
1028 exclude = last_exclude_matching_from_list(pathname, pathlen, basename,
1031 return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
1032 return -1; /* undecided */
1035 static struct exclude *last_exclude_matching_from_lists(struct dir_struct *dir,
1036 struct index_state *istate,
1037 const char *pathname, int pathlen, const char *basename,
1041 struct exclude_list_group *group;
1042 struct exclude *exclude;
1043 for (i = EXC_CMDL; i <= EXC_FILE; i++) {
1044 group = &dir->exclude_list_group[i];
1045 for (j = group->nr - 1; j >= 0; j--) {
1046 exclude = last_exclude_matching_from_list(
1047 pathname, pathlen, basename, dtype_p,
1048 &group->el[j], istate);
1057 * Loads the per-directory exclude list for the substring of base
1058 * which has a char length of baselen.
1060 static void prep_exclude(struct dir_struct *dir,
1061 struct index_state *istate,
1062 const char *base, int baselen)
1064 struct exclude_list_group *group;
1065 struct exclude_list *el;
1066 struct exclude_stack *stk = NULL;
1067 struct untracked_cache_dir *untracked;
1070 group = &dir->exclude_list_group[EXC_DIRS];
1073 * Pop the exclude lists from the EXCL_DIRS exclude_list_group
1074 * which originate from directories not in the prefix of the
1075 * path being checked.
1077 while ((stk = dir->exclude_stack) != NULL) {
1078 if (stk->baselen <= baselen &&
1079 !strncmp(dir->basebuf.buf, base, stk->baselen))
1081 el = &group->el[dir->exclude_stack->exclude_ix];
1082 dir->exclude_stack = stk->prev;
1083 dir->exclude = NULL;
1084 free((char *)el->src); /* see strbuf_detach() below */
1085 clear_exclude_list(el);
1090 /* Skip traversing into sub directories if the parent is excluded */
1095 * Lazy initialization. All call sites currently just
1096 * memset(dir, 0, sizeof(*dir)) before use. Changing all of
1097 * them seems lots of work for little benefit.
1099 if (!dir->basebuf.buf)
1100 strbuf_init(&dir->basebuf, PATH_MAX);
1102 /* Read from the parent directories and push them down. */
1103 current = stk ? stk->baselen : -1;
1104 strbuf_setlen(&dir->basebuf, current < 0 ? 0 : current);
1106 untracked = stk ? stk->ucd : dir->untracked->root;
1110 while (current < baselen) {
1112 struct sha1_stat sha1_stat;
1114 stk = xcalloc(1, sizeof(*stk));
1119 cp = strchr(base + current + 1, '/');
1121 die("oops in prep_exclude");
1124 lookup_untracked(dir->untracked, untracked,
1126 cp - base - current);
1128 stk->prev = dir->exclude_stack;
1129 stk->baselen = cp - base;
1130 stk->exclude_ix = group->nr;
1131 stk->ucd = untracked;
1132 el = add_exclude_list(dir, EXC_DIRS, NULL);
1133 strbuf_add(&dir->basebuf, base + current, stk->baselen - current);
1134 assert(stk->baselen == dir->basebuf.len);
1136 /* Abort if the directory is excluded */
1139 dir->basebuf.buf[stk->baselen - 1] = 0;
1140 dir->exclude = last_exclude_matching_from_lists(dir,
1142 dir->basebuf.buf, stk->baselen - 1,
1143 dir->basebuf.buf + current, &dt);
1144 dir->basebuf.buf[stk->baselen - 1] = '/';
1146 dir->exclude->flags & EXC_FLAG_NEGATIVE)
1147 dir->exclude = NULL;
1149 dir->exclude_stack = stk;
1154 /* Try to read per-directory file */
1155 hashclr(sha1_stat.sha1);
1156 sha1_stat.valid = 0;
1157 if (dir->exclude_per_dir &&
1159 * If we know that no files have been added in
1160 * this directory (i.e. valid_cached_dir() has
1161 * been executed and set untracked->valid) ..
1163 (!untracked || !untracked->valid ||
1165 * .. and .gitignore does not exist before
1166 * (i.e. null exclude_sha1). Then we can skip
1167 * loading .gitignore, which would result in
1170 !is_null_sha1(untracked->exclude_sha1))) {
1172 * dir->basebuf gets reused by the traversal, but we
1173 * need fname to remain unchanged to ensure the src
1174 * member of each struct exclude correctly
1175 * back-references its source file. Other invocations
1176 * of add_exclude_list provide stable strings, so we
1177 * strbuf_detach() and free() here in the caller.
1179 struct strbuf sb = STRBUF_INIT;
1180 strbuf_addbuf(&sb, &dir->basebuf);
1181 strbuf_addstr(&sb, dir->exclude_per_dir);
1182 el->src = strbuf_detach(&sb, NULL);
1183 add_excludes(el->src, el->src, stk->baselen, el, istate,
1184 untracked ? &sha1_stat : NULL);
1187 * NEEDSWORK: when untracked cache is enabled, prep_exclude()
1188 * will first be called in valid_cached_dir() then maybe many
1189 * times more in last_exclude_matching(). When the cache is
1190 * used, last_exclude_matching() will not be called and
1191 * reading .gitignore content will be a waste.
1193 * So when it's called by valid_cached_dir() and we can get
1194 * .gitignore SHA-1 from the index (i.e. .gitignore is not
1195 * modified on work tree), we could delay reading the
1196 * .gitignore content until we absolutely need it in
1197 * last_exclude_matching(). Be careful about ignore rule
1198 * order, though, if you do that.
1201 hashcmp(sha1_stat.sha1, untracked->exclude_sha1)) {
1202 invalidate_gitignore(dir->untracked, untracked);
1203 hashcpy(untracked->exclude_sha1, sha1_stat.sha1);
1205 dir->exclude_stack = stk;
1206 current = stk->baselen;
1208 strbuf_setlen(&dir->basebuf, baselen);
1212 * Loads the exclude lists for the directory containing pathname, then
1213 * scans all exclude lists to determine whether pathname is excluded.
1214 * Returns the exclude_list element which matched, or NULL for
1217 struct exclude *last_exclude_matching(struct dir_struct *dir,
1218 struct index_state *istate,
1219 const char *pathname,
1222 int pathlen = strlen(pathname);
1223 const char *basename = strrchr(pathname, '/');
1224 basename = (basename) ? basename+1 : pathname;
1226 prep_exclude(dir, istate, pathname, basename-pathname);
1229 return dir->exclude;
1231 return last_exclude_matching_from_lists(dir, istate, pathname, pathlen,
1236 * Loads the exclude lists for the directory containing pathname, then
1237 * scans all exclude lists to determine whether pathname is excluded.
1238 * Returns 1 if true, otherwise 0.
1240 int is_excluded(struct dir_struct *dir, struct index_state *istate,
1241 const char *pathname, int *dtype_p)
1243 struct exclude *exclude =
1244 last_exclude_matching(dir, istate, pathname, dtype_p);
1246 return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
1250 static struct dir_entry *dir_entry_new(const char *pathname, int len)
1252 struct dir_entry *ent;
1254 FLEX_ALLOC_MEM(ent, name, pathname, len);
1259 static struct dir_entry *dir_add_name(struct dir_struct *dir,
1260 struct index_state *istate,
1261 const char *pathname, int len)
1263 if (index_file_exists(istate, pathname, len, ignore_case))
1266 ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
1267 return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
1270 struct dir_entry *dir_add_ignored(struct dir_struct *dir,
1271 struct index_state *istate,
1272 const char *pathname, int len)
1274 if (!index_name_is_other(istate, pathname, len))
1277 ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc);
1278 return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len);
1282 index_nonexistent = 0,
1288 * Do not use the alphabetically sorted index to look up
1289 * the directory name; instead, use the case insensitive
1292 static enum exist_status directory_exists_in_index_icase(struct index_state *istate,
1293 const char *dirname, int len)
1295 struct cache_entry *ce;
1297 if (index_dir_exists(istate, dirname, len))
1298 return index_directory;
1300 ce = index_file_exists(istate, dirname, len, ignore_case);
1301 if (ce && S_ISGITLINK(ce->ce_mode))
1302 return index_gitdir;
1304 return index_nonexistent;
1308 * The index sorts alphabetically by entry name, which
1309 * means that a gitlink sorts as '\0' at the end, while
1310 * a directory (which is defined not as an entry, but as
1311 * the files it contains) will sort with the '/' at the
1314 static enum exist_status directory_exists_in_index(struct index_state *istate,
1315 const char *dirname, int len)
1320 return directory_exists_in_index_icase(istate, dirname, len);
1322 pos = index_name_pos(istate, dirname, len);
1325 while (pos < istate->cache_nr) {
1326 const struct cache_entry *ce = istate->cache[pos++];
1327 unsigned char endchar;
1329 if (strncmp(ce->name, dirname, len))
1331 endchar = ce->name[len];
1335 return index_directory;
1336 if (!endchar && S_ISGITLINK(ce->ce_mode))
1337 return index_gitdir;
1339 return index_nonexistent;
1343 * When we find a directory when traversing the filesystem, we
1344 * have three distinct cases:
1347 * - see it as a directory
1350 * and which one we choose depends on a combination of existing
1351 * git index contents and the flags passed into the directory
1352 * traversal routine.
1354 * Case 1: If we *already* have entries in the index under that
1355 * directory name, we always recurse into the directory to see
1358 * Case 2: If we *already* have that directory name as a gitlink,
1359 * we always continue to see it as a gitlink, regardless of whether
1360 * there is an actual git directory there or not (it might not
1361 * be checked out as a subproject!)
1363 * Case 3: if we didn't have it in the index previously, we
1364 * have a few sub-cases:
1366 * (a) if "show_other_directories" is true, we show it as
1367 * just a directory, unless "hide_empty_directories" is
1368 * also true, in which case we need to check if it contains any
1369 * untracked and / or ignored files.
1370 * (b) if it looks like a git directory, and we don't have
1371 * 'no_gitlinks' set we treat it as a gitlink, and show it
1373 * (c) otherwise, we recurse into it.
1375 static enum path_treatment treat_directory(struct dir_struct *dir,
1376 struct index_state *istate,
1377 struct untracked_cache_dir *untracked,
1378 const char *dirname, int len, int baselen, int exclude,
1379 const struct pathspec *pathspec)
1381 /* The "len-1" is to strip the final '/' */
1382 switch (directory_exists_in_index(istate, dirname, len-1)) {
1383 case index_directory:
1384 return path_recurse;
1389 case index_nonexistent:
1390 if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
1392 if (!(dir->flags & DIR_NO_GITLINKS)) {
1393 unsigned char sha1[20];
1394 if (resolve_gitlink_ref(dirname, "HEAD", sha1) == 0)
1395 return path_untracked;
1397 return path_recurse;
1400 /* This is the "show_other_directories" case */
1402 if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
1403 return exclude ? path_excluded : path_untracked;
1405 untracked = lookup_untracked(dir->untracked, untracked,
1406 dirname + baselen, len - baselen);
1407 return read_directory_recursive(dir, istate, dirname, len,
1408 untracked, 1, pathspec);
1412 * This is an inexact early pruning of any recursive directory
1413 * reading - if the path cannot possibly be in the pathspec,
1414 * return true, and we'll skip it early.
1416 static int simplify_away(const char *path, int pathlen,
1417 const struct pathspec *pathspec)
1421 if (!pathspec || !pathspec->nr)
1424 GUARD_PATHSPEC(pathspec,
1433 for (i = 0; i < pathspec->nr; i++) {
1434 const struct pathspec_item *item = &pathspec->items[i];
1435 int len = item->nowildcard_len;
1439 if (!ps_strncmp(item, item->match, path, len))
1447 * This function tells us whether an excluded path matches a
1448 * list of "interesting" pathspecs. That is, whether a path matched
1449 * by any of the pathspecs could possibly be ignored by excluding
1450 * the specified path. This can happen if:
1452 * 1. the path is mentioned explicitly in the pathspec
1454 * 2. the path is a directory prefix of some element in the
1457 static int exclude_matches_pathspec(const char *path, int pathlen,
1458 const struct pathspec *pathspec)
1462 if (!pathspec || !pathspec->nr)
1465 GUARD_PATHSPEC(pathspec,
1473 for (i = 0; i < pathspec->nr; i++) {
1474 const struct pathspec_item *item = &pathspec->items[i];
1475 int len = item->nowildcard_len;
1477 if (len == pathlen &&
1478 !ps_strncmp(item, item->match, path, pathlen))
1480 if (len > pathlen &&
1481 item->match[pathlen] == '/' &&
1482 !ps_strncmp(item, item->match, path, pathlen))
1488 static int get_index_dtype(struct index_state *istate,
1489 const char *path, int len)
1492 const struct cache_entry *ce;
1494 ce = index_file_exists(istate, path, len, 0);
1496 if (!ce_uptodate(ce))
1498 if (S_ISGITLINK(ce->ce_mode))
1501 * Nobody actually cares about the
1502 * difference between DT_LNK and DT_REG
1507 /* Try to look it up as a directory */
1508 pos = index_name_pos(istate, path, len);
1512 while (pos < istate->cache_nr) {
1513 ce = istate->cache[pos++];
1514 if (strncmp(ce->name, path, len))
1516 if (ce->name[len] > '/')
1518 if (ce->name[len] < '/')
1520 if (!ce_uptodate(ce))
1521 break; /* continue? */
1527 static int get_dtype(struct dirent *de, struct index_state *istate,
1528 const char *path, int len)
1530 int dtype = de ? DTYPE(de) : DT_UNKNOWN;
1533 if (dtype != DT_UNKNOWN)
1535 dtype = get_index_dtype(istate, path, len);
1536 if (dtype != DT_UNKNOWN)
1538 if (lstat(path, &st))
1540 if (S_ISREG(st.st_mode))
1542 if (S_ISDIR(st.st_mode))
1544 if (S_ISLNK(st.st_mode))
1549 static enum path_treatment treat_one_path(struct dir_struct *dir,
1550 struct untracked_cache_dir *untracked,
1551 struct index_state *istate,
1552 struct strbuf *path,
1554 const struct pathspec *pathspec,
1555 int dtype, struct dirent *de)
1558 int has_path_in_index = !!index_file_exists(istate, path->buf, path->len, ignore_case);
1560 if (dtype == DT_UNKNOWN)
1561 dtype = get_dtype(de, istate, path->buf, path->len);
1563 /* Always exclude indexed files */
1564 if (dtype != DT_DIR && has_path_in_index)
1568 * When we are looking at a directory P in the working tree,
1569 * there are three cases:
1571 * (1) P exists in the index. Everything inside the directory P in
1572 * the working tree needs to go when P is checked out from the
1575 * (2) P does not exist in the index, but there is P/Q in the index.
1576 * We know P will stay a directory when we check out the contents
1577 * of the index, but we do not know yet if there is a directory
1578 * P/Q in the working tree to be killed, so we need to recurse.
1580 * (3) P does not exist in the index, and there is no P/Q in the index
1581 * to require P to be a directory, either. Only in this case, we
1582 * know that everything inside P will not be killed without
1585 if ((dir->flags & DIR_COLLECT_KILLED_ONLY) &&
1586 (dtype == DT_DIR) &&
1587 !has_path_in_index &&
1588 (directory_exists_in_index(istate, path->buf, path->len) == index_nonexistent))
1591 exclude = is_excluded(dir, istate, path->buf, &dtype);
1594 * Excluded? If we don't explicitly want to show
1595 * ignored files, ignore it
1597 if (exclude && !(dir->flags & (DIR_SHOW_IGNORED|DIR_SHOW_IGNORED_TOO)))
1598 return path_excluded;
1604 strbuf_addch(path, '/');
1605 return treat_directory(dir, istate, untracked, path->buf, path->len,
1606 baselen, exclude, pathspec);
1609 return exclude ? path_excluded : path_untracked;
1613 static enum path_treatment treat_path_fast(struct dir_struct *dir,
1614 struct untracked_cache_dir *untracked,
1615 struct cached_dir *cdir,
1616 struct index_state *istate,
1617 struct strbuf *path,
1619 const struct pathspec *pathspec)
1621 strbuf_setlen(path, baselen);
1623 strbuf_addstr(path, cdir->file);
1624 return path_untracked;
1626 strbuf_addstr(path, cdir->ucd->name);
1627 /* treat_one_path() does this before it calls treat_directory() */
1628 strbuf_complete(path, '/');
1629 if (cdir->ucd->check_only)
1631 * check_only is set as a result of treat_directory() getting
1632 * to its bottom. Verify again the same set of directories
1633 * with check_only set.
1635 return read_directory_recursive(dir, istate, path->buf, path->len,
1636 cdir->ucd, 1, pathspec);
1638 * We get path_recurse in the first run when
1639 * directory_exists_in_index() returns index_nonexistent. We
1640 * are sure that new changes in the index does not impact the
1641 * outcome. Return now.
1643 return path_recurse;
1646 static enum path_treatment treat_path(struct dir_struct *dir,
1647 struct untracked_cache_dir *untracked,
1648 struct cached_dir *cdir,
1649 struct index_state *istate,
1650 struct strbuf *path,
1652 const struct pathspec *pathspec)
1655 struct dirent *de = cdir->de;
1658 return treat_path_fast(dir, untracked, cdir, istate, path,
1660 if (is_dot_or_dotdot(de->d_name) || !strcmp(de->d_name, ".git"))
1662 strbuf_setlen(path, baselen);
1663 strbuf_addstr(path, de->d_name);
1664 if (simplify_away(path->buf, path->len, pathspec))
1668 return treat_one_path(dir, untracked, istate, path, baselen, pathspec, dtype, de);
1671 static void add_untracked(struct untracked_cache_dir *dir, const char *name)
1675 ALLOC_GROW(dir->untracked, dir->untracked_nr + 1,
1676 dir->untracked_alloc);
1677 dir->untracked[dir->untracked_nr++] = xstrdup(name);
1680 static int valid_cached_dir(struct dir_struct *dir,
1681 struct untracked_cache_dir *untracked,
1682 struct index_state *istate,
1683 struct strbuf *path,
1691 if (stat(path->len ? path->buf : ".", &st)) {
1692 invalidate_directory(dir->untracked, untracked);
1693 memset(&untracked->stat_data, 0, sizeof(untracked->stat_data));
1696 if (!untracked->valid ||
1697 match_stat_data_racy(istate, &untracked->stat_data, &st)) {
1698 if (untracked->valid)
1699 invalidate_directory(dir->untracked, untracked);
1700 fill_stat_data(&untracked->stat_data, &st);
1704 if (untracked->check_only != !!check_only) {
1705 invalidate_directory(dir->untracked, untracked);
1710 * prep_exclude will be called eventually on this directory,
1711 * but it's called much later in last_exclude_matching(). We
1712 * need it now to determine the validity of the cache for this
1713 * path. The next calls will be nearly no-op, the way
1714 * prep_exclude() is designed.
1716 if (path->len && path->buf[path->len - 1] != '/') {
1717 strbuf_addch(path, '/');
1718 prep_exclude(dir, istate, path->buf, path->len);
1719 strbuf_setlen(path, path->len - 1);
1721 prep_exclude(dir, istate, path->buf, path->len);
1723 /* hopefully prep_exclude() haven't invalidated this entry... */
1724 return untracked->valid;
1727 static int open_cached_dir(struct cached_dir *cdir,
1728 struct dir_struct *dir,
1729 struct untracked_cache_dir *untracked,
1730 struct index_state *istate,
1731 struct strbuf *path,
1734 memset(cdir, 0, sizeof(*cdir));
1735 cdir->untracked = untracked;
1736 if (valid_cached_dir(dir, untracked, istate, path, check_only))
1738 cdir->fdir = opendir(path->len ? path->buf : ".");
1740 dir->untracked->dir_opened++;
1746 static int read_cached_dir(struct cached_dir *cdir)
1749 cdir->de = readdir(cdir->fdir);
1754 while (cdir->nr_dirs < cdir->untracked->dirs_nr) {
1755 struct untracked_cache_dir *d = cdir->untracked->dirs[cdir->nr_dirs];
1765 if (cdir->nr_files < cdir->untracked->untracked_nr) {
1766 struct untracked_cache_dir *d = cdir->untracked;
1767 cdir->file = d->untracked[cdir->nr_files++];
1773 static void close_cached_dir(struct cached_dir *cdir)
1776 closedir(cdir->fdir);
1778 * We have gone through this directory and found no untracked
1779 * entries. Mark it valid.
1781 if (cdir->untracked) {
1782 cdir->untracked->valid = 1;
1783 cdir->untracked->recurse = 1;
1788 * Read a directory tree. We currently ignore anything but
1789 * directories, regular files and symlinks. That's because git
1790 * doesn't handle them at all yet. Maybe that will change some
1793 * Also, we ignore the name ".git" (even if it is not a directory).
1794 * That likely will not change.
1796 * Returns the most significant path_treatment value encountered in the scan.
1798 static enum path_treatment read_directory_recursive(struct dir_struct *dir,
1799 struct index_state *istate, const char *base, int baselen,
1800 struct untracked_cache_dir *untracked, int check_only,
1801 const struct pathspec *pathspec)
1803 struct cached_dir cdir;
1804 enum path_treatment state, subdir_state, dir_state = path_none;
1805 struct strbuf path = STRBUF_INIT;
1807 strbuf_add(&path, base, baselen);
1809 if (open_cached_dir(&cdir, dir, untracked, istate, &path, check_only))
1813 untracked->check_only = !!check_only;
1815 while (!read_cached_dir(&cdir)) {
1816 /* check how the file or directory should be treated */
1817 state = treat_path(dir, untracked, &cdir, istate, &path,
1820 if (state > dir_state)
1823 /* recurse into subdir if instructed by treat_path */
1824 if ((state == path_recurse) ||
1825 ((state == path_untracked) &&
1826 (dir->flags & DIR_SHOW_IGNORED_TOO) &&
1827 (get_dtype(cdir.de, istate, path.buf, path.len) == DT_DIR))) {
1828 struct untracked_cache_dir *ud;
1829 ud = lookup_untracked(dir->untracked, untracked,
1831 path.len - baselen);
1833 read_directory_recursive(dir, istate, path.buf,
1835 check_only, pathspec);
1836 if (subdir_state > dir_state)
1837 dir_state = subdir_state;
1841 /* abort early if maximum state has been reached */
1842 if (dir_state == path_untracked) {
1844 add_untracked(untracked, path.buf + baselen);
1847 /* skip the dir_add_* part */
1851 /* add the path to the appropriate result list */
1854 if (dir->flags & DIR_SHOW_IGNORED)
1855 dir_add_name(dir, istate, path.buf, path.len);
1856 else if ((dir->flags & DIR_SHOW_IGNORED_TOO) ||
1857 ((dir->flags & DIR_COLLECT_IGNORED) &&
1858 exclude_matches_pathspec(path.buf, path.len,
1860 dir_add_ignored(dir, istate, path.buf, path.len);
1863 case path_untracked:
1864 if (dir->flags & DIR_SHOW_IGNORED)
1866 dir_add_name(dir, istate, path.buf, path.len);
1868 add_untracked(untracked, path.buf + baselen);
1875 close_cached_dir(&cdir);
1877 strbuf_release(&path);
1882 int cmp_dir_entry(const void *p1, const void *p2)
1884 const struct dir_entry *e1 = *(const struct dir_entry **)p1;
1885 const struct dir_entry *e2 = *(const struct dir_entry **)p2;
1887 return name_compare(e1->name, e1->len, e2->name, e2->len);
1890 /* check if *out lexically strictly contains *in */
1891 int check_dir_entry_contains(const struct dir_entry *out, const struct dir_entry *in)
1893 return (out->len < in->len) &&
1894 (out->name[out->len - 1] == '/') &&
1895 !memcmp(out->name, in->name, out->len);
1898 static int treat_leading_path(struct dir_struct *dir,
1899 struct index_state *istate,
1900 const char *path, int len,
1901 const struct pathspec *pathspec)
1903 struct strbuf sb = STRBUF_INIT;
1904 int baselen, rc = 0;
1906 int old_flags = dir->flags;
1908 while (len && path[len - 1] == '/')
1913 dir->flags &= ~DIR_SHOW_OTHER_DIRECTORIES;
1915 cp = path + baselen + !!baselen;
1916 cp = memchr(cp, '/', path + len - cp);
1920 baselen = cp - path;
1921 strbuf_setlen(&sb, 0);
1922 strbuf_add(&sb, path, baselen);
1923 if (!is_directory(sb.buf))
1925 if (simplify_away(sb.buf, sb.len, pathspec))
1927 if (treat_one_path(dir, NULL, istate, &sb, baselen, pathspec,
1928 DT_DIR, NULL) == path_none)
1929 break; /* do not recurse into it */
1930 if (len <= baselen) {
1932 break; /* finished checking */
1935 strbuf_release(&sb);
1936 dir->flags = old_flags;
1940 static const char *get_ident_string(void)
1942 static struct strbuf sb = STRBUF_INIT;
1947 if (uname(&uts) < 0)
1948 die_errno(_("failed to get kernel name and information"));
1949 strbuf_addf(&sb, "Location %s, system %s", get_git_work_tree(),
1954 static int ident_in_untracked(const struct untracked_cache *uc)
1957 * Previous git versions may have saved many NUL separated
1958 * strings in the "ident" field, but it is insane to manage
1959 * many locations, so just take care of the first one.
1962 return !strcmp(uc->ident.buf, get_ident_string());
1965 static void set_untracked_ident(struct untracked_cache *uc)
1967 strbuf_reset(&uc->ident);
1968 strbuf_addstr(&uc->ident, get_ident_string());
1971 * This strbuf used to contain a list of NUL separated
1972 * strings, so save NUL too for backward compatibility.
1974 strbuf_addch(&uc->ident, 0);
1977 static void new_untracked_cache(struct index_state *istate)
1979 struct untracked_cache *uc = xcalloc(1, sizeof(*uc));
1980 strbuf_init(&uc->ident, 100);
1981 uc->exclude_per_dir = ".gitignore";
1982 /* should be the same flags used by git-status */
1983 uc->dir_flags = DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
1984 set_untracked_ident(uc);
1985 istate->untracked = uc;
1986 istate->cache_changed |= UNTRACKED_CHANGED;
1989 void add_untracked_cache(struct index_state *istate)
1991 if (!istate->untracked) {
1992 new_untracked_cache(istate);
1994 if (!ident_in_untracked(istate->untracked)) {
1995 free_untracked_cache(istate->untracked);
1996 new_untracked_cache(istate);
2001 void remove_untracked_cache(struct index_state *istate)
2003 if (istate->untracked) {
2004 free_untracked_cache(istate->untracked);
2005 istate->untracked = NULL;
2006 istate->cache_changed |= UNTRACKED_CHANGED;
2010 static struct untracked_cache_dir *validate_untracked_cache(struct dir_struct *dir,
2012 const struct pathspec *pathspec)
2014 struct untracked_cache_dir *root;
2016 if (!dir->untracked || getenv("GIT_DISABLE_UNTRACKED_CACHE"))
2020 * We only support $GIT_DIR/info/exclude and core.excludesfile
2021 * as the global ignore rule files. Any other additions
2022 * (e.g. from command line) invalidate the cache. This
2023 * condition also catches running setup_standard_excludes()
2024 * before setting dir->untracked!
2026 if (dir->unmanaged_exclude_files)
2030 * Optimize for the main use case only: whole-tree git
2031 * status. More work involved in treat_leading_path() if we
2032 * use cache on just a subset of the worktree. pathspec
2033 * support could make the matter even worse.
2035 if (base_len || (pathspec && pathspec->nr))
2038 /* Different set of flags may produce different results */
2039 if (dir->flags != dir->untracked->dir_flags ||
2041 * See treat_directory(), case index_nonexistent. Without
2042 * this flag, we may need to also cache .git file content
2043 * for the resolve_gitlink_ref() call, which we don't.
2045 !(dir->flags & DIR_SHOW_OTHER_DIRECTORIES) ||
2046 /* We don't support collecting ignore files */
2047 (dir->flags & (DIR_SHOW_IGNORED | DIR_SHOW_IGNORED_TOO |
2048 DIR_COLLECT_IGNORED)))
2052 * If we use .gitignore in the cache and now you change it to
2053 * .gitexclude, everything will go wrong.
2055 if (dir->exclude_per_dir != dir->untracked->exclude_per_dir &&
2056 strcmp(dir->exclude_per_dir, dir->untracked->exclude_per_dir))
2060 * EXC_CMDL is not considered in the cache. If people set it,
2063 if (dir->exclude_list_group[EXC_CMDL].nr)
2066 if (!ident_in_untracked(dir->untracked)) {
2067 warning(_("Untracked cache is disabled on this system or location."));
2071 if (!dir->untracked->root) {
2072 const int len = sizeof(*dir->untracked->root);
2073 dir->untracked->root = xmalloc(len);
2074 memset(dir->untracked->root, 0, len);
2077 /* Validate $GIT_DIR/info/exclude and core.excludesfile */
2078 root = dir->untracked->root;
2079 if (hashcmp(dir->ss_info_exclude.sha1,
2080 dir->untracked->ss_info_exclude.sha1)) {
2081 invalidate_gitignore(dir->untracked, root);
2082 dir->untracked->ss_info_exclude = dir->ss_info_exclude;
2084 if (hashcmp(dir->ss_excludes_file.sha1,
2085 dir->untracked->ss_excludes_file.sha1)) {
2086 invalidate_gitignore(dir->untracked, root);
2087 dir->untracked->ss_excludes_file = dir->ss_excludes_file;
2090 /* Make sure this directory is not dropped out at saving phase */
2095 int read_directory(struct dir_struct *dir, struct index_state *istate,
2096 const char *path, int len, const struct pathspec *pathspec)
2098 struct untracked_cache_dir *untracked;
2100 if (has_symlink_leading_path(path, len))
2103 untracked = validate_untracked_cache(dir, len, pathspec);
2106 * make sure untracked cache code path is disabled,
2107 * e.g. prep_exclude()
2109 dir->untracked = NULL;
2110 if (!len || treat_leading_path(dir, istate, path, len, pathspec))
2111 read_directory_recursive(dir, istate, path, len, untracked, 0, pathspec);
2112 QSORT(dir->entries, dir->nr, cmp_dir_entry);
2113 QSORT(dir->ignored, dir->ignored_nr, cmp_dir_entry);
2116 * If DIR_SHOW_IGNORED_TOO is set, read_directory_recursive() will
2117 * also pick up untracked contents of untracked dirs; by default
2118 * we discard these, but given DIR_KEEP_UNTRACKED_CONTENTS we do not.
2120 if ((dir->flags & DIR_SHOW_IGNORED_TOO) &&
2121 !(dir->flags & DIR_KEEP_UNTRACKED_CONTENTS)) {
2124 /* remove from dir->entries untracked contents of untracked dirs */
2125 for (i = j = 0; j < dir->nr; j++) {
2127 check_dir_entry_contains(dir->entries[i - 1], dir->entries[j])) {
2128 FREE_AND_NULL(dir->entries[j]);
2130 dir->entries[i++] = dir->entries[j];
2137 if (dir->untracked) {
2138 static struct trace_key trace_untracked_stats = TRACE_KEY_INIT(UNTRACKED_STATS);
2139 trace_printf_key(&trace_untracked_stats,
2140 "node creation: %u\n"
2141 "gitignore invalidation: %u\n"
2142 "directory invalidation: %u\n"
2144 dir->untracked->dir_created,
2145 dir->untracked->gitignore_invalidated,
2146 dir->untracked->dir_invalidated,
2147 dir->untracked->dir_opened);
2148 if (dir->untracked == istate->untracked &&
2149 (dir->untracked->dir_opened ||
2150 dir->untracked->gitignore_invalidated ||
2151 dir->untracked->dir_invalidated))
2152 istate->cache_changed |= UNTRACKED_CHANGED;
2153 if (dir->untracked != istate->untracked) {
2154 FREE_AND_NULL(dir->untracked);
2160 int file_exists(const char *f)
2163 return lstat(f, &sb) == 0;
2166 static int cmp_icase(char a, char b)
2171 return toupper(a) - toupper(b);
2176 * Given two normalized paths (a trailing slash is ok), if subdir is
2177 * outside dir, return -1. Otherwise return the offset in subdir that
2178 * can be used as relative path to dir.
2180 int dir_inside_of(const char *subdir, const char *dir)
2184 assert(dir && subdir && *dir && *subdir);
2186 while (*dir && *subdir && !cmp_icase(*dir, *subdir)) {
2192 /* hel[p]/me vs hel[l]/yeah */
2193 if (*dir && *subdir)
2197 return !*dir ? offset : -1; /* same dir */
2199 /* foo/[b]ar vs foo/[] */
2200 if (is_dir_sep(dir[-1]))
2201 return is_dir_sep(subdir[-1]) ? offset : -1;
2203 /* foo[/]bar vs foo[] */
2204 return is_dir_sep(*subdir) ? offset + 1 : -1;
2207 int is_inside_dir(const char *dir)
2216 rc = (dir_inside_of(cwd, dir) >= 0);
2221 int is_empty_dir(const char *path)
2223 DIR *dir = opendir(path);
2230 while ((e = readdir(dir)) != NULL)
2231 if (!is_dot_or_dotdot(e->d_name)) {
2240 static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up)
2244 int ret = 0, original_len = path->len, len, kept_down = 0;
2245 int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY);
2246 int keep_toplevel = (flag & REMOVE_DIR_KEEP_TOPLEVEL);
2247 unsigned char submodule_head[20];
2249 if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
2250 !resolve_gitlink_ref(path->buf, "HEAD", submodule_head)) {
2251 /* Do not descend and nuke a nested git work tree. */
2257 flag &= ~REMOVE_DIR_KEEP_TOPLEVEL;
2258 dir = opendir(path->buf);
2260 if (errno == ENOENT)
2261 return keep_toplevel ? -1 : 0;
2262 else if (errno == EACCES && !keep_toplevel)
2264 * An empty dir could be removable even if it
2267 return rmdir(path->buf);
2271 strbuf_complete(path, '/');
2274 while ((e = readdir(dir)) != NULL) {
2276 if (is_dot_or_dotdot(e->d_name))
2279 strbuf_setlen(path, len);
2280 strbuf_addstr(path, e->d_name);
2281 if (lstat(path->buf, &st)) {
2282 if (errno == ENOENT)
2284 * file disappeared, which is what we
2289 } else if (S_ISDIR(st.st_mode)) {
2290 if (!remove_dir_recurse(path, flag, &kept_down))
2291 continue; /* happy */
2292 } else if (!only_empty &&
2293 (!unlink(path->buf) || errno == ENOENT)) {
2294 continue; /* happy, too */
2297 /* path too long, stat fails, or non-directory still exists */
2303 strbuf_setlen(path, original_len);
2304 if (!ret && !keep_toplevel && !kept_down)
2305 ret = (!rmdir(path->buf) || errno == ENOENT) ? 0 : -1;
2308 * report the uplevel that it is not an error that we
2309 * did not rmdir() our directory.
2315 int remove_dir_recursively(struct strbuf *path, int flag)
2317 return remove_dir_recurse(path, flag, NULL);
2320 static GIT_PATH_FUNC(git_path_info_exclude, "info/exclude")
2322 void setup_standard_excludes(struct dir_struct *dir)
2324 dir->exclude_per_dir = ".gitignore";
2326 /* core.excludefile defaulting to $XDG_HOME/git/ignore */
2328 excludes_file = xdg_config_home("ignore");
2329 if (excludes_file && !access_or_warn(excludes_file, R_OK, 0))
2330 add_excludes_from_file_1(dir, excludes_file,
2331 dir->untracked ? &dir->ss_excludes_file : NULL);
2333 /* per repository user preference */
2334 if (startup_info->have_repository) {
2335 const char *path = git_path_info_exclude();
2336 if (!access_or_warn(path, R_OK, 0))
2337 add_excludes_from_file_1(dir, path,
2338 dir->untracked ? &dir->ss_info_exclude : NULL);
2342 int remove_path(const char *name)
2346 if (unlink(name) && !is_missing_file_error(errno))
2349 slash = strrchr(name, '/');
2351 char *dirs = xstrdup(name);
2352 slash = dirs + (slash - name);
2355 } while (rmdir(dirs) == 0 && (slash = strrchr(dirs, '/')));
2362 * Frees memory within dir which was allocated for exclude lists and
2363 * the exclude_stack. Does not free dir itself.
2365 void clear_directory(struct dir_struct *dir)
2368 struct exclude_list_group *group;
2369 struct exclude_list *el;
2370 struct exclude_stack *stk;
2372 for (i = EXC_CMDL; i <= EXC_FILE; i++) {
2373 group = &dir->exclude_list_group[i];
2374 for (j = 0; j < group->nr; j++) {
2377 free((char *)el->src);
2378 clear_exclude_list(el);
2383 stk = dir->exclude_stack;
2385 struct exclude_stack *prev = stk->prev;
2389 strbuf_release(&dir->basebuf);
2392 struct ondisk_untracked_cache {
2393 struct stat_data info_exclude_stat;
2394 struct stat_data excludes_file_stat;
2396 unsigned char info_exclude_sha1[20];
2397 unsigned char excludes_file_sha1[20];
2398 char exclude_per_dir[FLEX_ARRAY];
2401 #define ouc_offset(x) offsetof(struct ondisk_untracked_cache, x)
2402 #define ouc_size(len) (ouc_offset(exclude_per_dir) + len + 1)
2405 int index; /* number of written untracked_cache_dir */
2406 struct ewah_bitmap *check_only; /* from untracked_cache_dir */
2407 struct ewah_bitmap *valid; /* from untracked_cache_dir */
2408 struct ewah_bitmap *sha1_valid; /* set if exclude_sha1 is not null */
2410 struct strbuf sb_stat;
2411 struct strbuf sb_sha1;
2414 static void stat_data_to_disk(struct stat_data *to, const struct stat_data *from)
2416 to->sd_ctime.sec = htonl(from->sd_ctime.sec);
2417 to->sd_ctime.nsec = htonl(from->sd_ctime.nsec);
2418 to->sd_mtime.sec = htonl(from->sd_mtime.sec);
2419 to->sd_mtime.nsec = htonl(from->sd_mtime.nsec);
2420 to->sd_dev = htonl(from->sd_dev);
2421 to->sd_ino = htonl(from->sd_ino);
2422 to->sd_uid = htonl(from->sd_uid);
2423 to->sd_gid = htonl(from->sd_gid);
2424 to->sd_size = htonl(from->sd_size);
2427 static void write_one_dir(struct untracked_cache_dir *untracked,
2428 struct write_data *wd)
2430 struct stat_data stat_data;
2431 struct strbuf *out = &wd->out;
2432 unsigned char intbuf[16];
2433 unsigned int intlen, value;
2434 int i = wd->index++;
2437 * untracked_nr should be reset whenever valid is clear, but
2440 if (!untracked->valid) {
2441 untracked->untracked_nr = 0;
2442 untracked->check_only = 0;
2445 if (untracked->check_only)
2446 ewah_set(wd->check_only, i);
2447 if (untracked->valid) {
2448 ewah_set(wd->valid, i);
2449 stat_data_to_disk(&stat_data, &untracked->stat_data);
2450 strbuf_add(&wd->sb_stat, &stat_data, sizeof(stat_data));
2452 if (!is_null_sha1(untracked->exclude_sha1)) {
2453 ewah_set(wd->sha1_valid, i);
2454 strbuf_add(&wd->sb_sha1, untracked->exclude_sha1, 20);
2457 intlen = encode_varint(untracked->untracked_nr, intbuf);
2458 strbuf_add(out, intbuf, intlen);
2460 /* skip non-recurse directories */
2461 for (i = 0, value = 0; i < untracked->dirs_nr; i++)
2462 if (untracked->dirs[i]->recurse)
2464 intlen = encode_varint(value, intbuf);
2465 strbuf_add(out, intbuf, intlen);
2467 strbuf_add(out, untracked->name, strlen(untracked->name) + 1);
2469 for (i = 0; i < untracked->untracked_nr; i++)
2470 strbuf_add(out, untracked->untracked[i],
2471 strlen(untracked->untracked[i]) + 1);
2473 for (i = 0; i < untracked->dirs_nr; i++)
2474 if (untracked->dirs[i]->recurse)
2475 write_one_dir(untracked->dirs[i], wd);
2478 void write_untracked_extension(struct strbuf *out, struct untracked_cache *untracked)
2480 struct ondisk_untracked_cache *ouc;
2481 struct write_data wd;
2482 unsigned char varbuf[16];
2484 size_t len = strlen(untracked->exclude_per_dir);
2486 FLEX_ALLOC_MEM(ouc, exclude_per_dir, untracked->exclude_per_dir, len);
2487 stat_data_to_disk(&ouc->info_exclude_stat, &untracked->ss_info_exclude.stat);
2488 stat_data_to_disk(&ouc->excludes_file_stat, &untracked->ss_excludes_file.stat);
2489 hashcpy(ouc->info_exclude_sha1, untracked->ss_info_exclude.sha1);
2490 hashcpy(ouc->excludes_file_sha1, untracked->ss_excludes_file.sha1);
2491 ouc->dir_flags = htonl(untracked->dir_flags);
2493 varint_len = encode_varint(untracked->ident.len, varbuf);
2494 strbuf_add(out, varbuf, varint_len);
2495 strbuf_addbuf(out, &untracked->ident);
2497 strbuf_add(out, ouc, ouc_size(len));
2500 if (!untracked->root) {
2501 varint_len = encode_varint(0, varbuf);
2502 strbuf_add(out, varbuf, varint_len);
2507 wd.check_only = ewah_new();
2508 wd.valid = ewah_new();
2509 wd.sha1_valid = ewah_new();
2510 strbuf_init(&wd.out, 1024);
2511 strbuf_init(&wd.sb_stat, 1024);
2512 strbuf_init(&wd.sb_sha1, 1024);
2513 write_one_dir(untracked->root, &wd);
2515 varint_len = encode_varint(wd.index, varbuf);
2516 strbuf_add(out, varbuf, varint_len);
2517 strbuf_addbuf(out, &wd.out);
2518 ewah_serialize_strbuf(wd.valid, out);
2519 ewah_serialize_strbuf(wd.check_only, out);
2520 ewah_serialize_strbuf(wd.sha1_valid, out);
2521 strbuf_addbuf(out, &wd.sb_stat);
2522 strbuf_addbuf(out, &wd.sb_sha1);
2523 strbuf_addch(out, '\0'); /* safe guard for string lists */
2525 ewah_free(wd.valid);
2526 ewah_free(wd.check_only);
2527 ewah_free(wd.sha1_valid);
2528 strbuf_release(&wd.out);
2529 strbuf_release(&wd.sb_stat);
2530 strbuf_release(&wd.sb_sha1);
2533 static void free_untracked(struct untracked_cache_dir *ucd)
2538 for (i = 0; i < ucd->dirs_nr; i++)
2539 free_untracked(ucd->dirs[i]);
2540 for (i = 0; i < ucd->untracked_nr; i++)
2541 free(ucd->untracked[i]);
2542 free(ucd->untracked);
2547 void free_untracked_cache(struct untracked_cache *uc)
2550 free_untracked(uc->root);
2556 struct untracked_cache_dir **ucd;
2557 struct ewah_bitmap *check_only;
2558 struct ewah_bitmap *valid;
2559 struct ewah_bitmap *sha1_valid;
2560 const unsigned char *data;
2561 const unsigned char *end;
2564 static void stat_data_from_disk(struct stat_data *to, const unsigned char *data)
2566 memcpy(to, data, sizeof(*to));
2567 to->sd_ctime.sec = ntohl(to->sd_ctime.sec);
2568 to->sd_ctime.nsec = ntohl(to->sd_ctime.nsec);
2569 to->sd_mtime.sec = ntohl(to->sd_mtime.sec);
2570 to->sd_mtime.nsec = ntohl(to->sd_mtime.nsec);
2571 to->sd_dev = ntohl(to->sd_dev);
2572 to->sd_ino = ntohl(to->sd_ino);
2573 to->sd_uid = ntohl(to->sd_uid);
2574 to->sd_gid = ntohl(to->sd_gid);
2575 to->sd_size = ntohl(to->sd_size);
2578 static int read_one_dir(struct untracked_cache_dir **untracked_,
2579 struct read_data *rd)
2581 struct untracked_cache_dir ud, *untracked;
2582 const unsigned char *next, *data = rd->data, *end = rd->end;
2586 memset(&ud, 0, sizeof(ud));
2589 value = decode_varint(&next);
2593 ud.untracked_alloc = value;
2594 ud.untracked_nr = value;
2595 if (ud.untracked_nr)
2596 ALLOC_ARRAY(ud.untracked, ud.untracked_nr);
2600 ud.dirs_alloc = ud.dirs_nr = decode_varint(&next);
2603 ALLOC_ARRAY(ud.dirs, ud.dirs_nr);
2606 len = strlen((const char *)data);
2607 next = data + len + 1;
2610 *untracked_ = untracked = xmalloc(st_add(sizeof(*untracked), len));
2611 memcpy(untracked, &ud, sizeof(ud));
2612 memcpy(untracked->name, data, len + 1);
2615 for (i = 0; i < untracked->untracked_nr; i++) {
2616 len = strlen((const char *)data);
2617 next = data + len + 1;
2620 untracked->untracked[i] = xstrdup((const char*)data);
2624 rd->ucd[rd->index++] = untracked;
2627 for (i = 0; i < untracked->dirs_nr; i++) {
2628 len = read_one_dir(untracked->dirs + i, rd);
2635 static void set_check_only(size_t pos, void *cb)
2637 struct read_data *rd = cb;
2638 struct untracked_cache_dir *ud = rd->ucd[pos];
2642 static void read_stat(size_t pos, void *cb)
2644 struct read_data *rd = cb;
2645 struct untracked_cache_dir *ud = rd->ucd[pos];
2646 if (rd->data + sizeof(struct stat_data) > rd->end) {
2647 rd->data = rd->end + 1;
2650 stat_data_from_disk(&ud->stat_data, rd->data);
2651 rd->data += sizeof(struct stat_data);
2655 static void read_sha1(size_t pos, void *cb)
2657 struct read_data *rd = cb;
2658 struct untracked_cache_dir *ud = rd->ucd[pos];
2659 if (rd->data + 20 > rd->end) {
2660 rd->data = rd->end + 1;
2663 hashcpy(ud->exclude_sha1, rd->data);
2667 static void load_sha1_stat(struct sha1_stat *sha1_stat,
2668 const unsigned char *data,
2669 const unsigned char *sha1)
2671 stat_data_from_disk(&sha1_stat->stat, data);
2672 hashcpy(sha1_stat->sha1, sha1);
2673 sha1_stat->valid = 1;
2676 struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz)
2678 struct untracked_cache *uc;
2679 struct read_data rd;
2680 const unsigned char *next = data, *end = (const unsigned char *)data + sz;
2683 const char *exclude_per_dir;
2685 if (sz <= 1 || end[-1] != '\0')
2689 ident_len = decode_varint(&next);
2690 if (next + ident_len > end)
2692 ident = (const char *)next;
2695 if (next + ouc_size(0) > end)
2698 uc = xcalloc(1, sizeof(*uc));
2699 strbuf_init(&uc->ident, ident_len);
2700 strbuf_add(&uc->ident, ident, ident_len);
2701 load_sha1_stat(&uc->ss_info_exclude,
2702 next + ouc_offset(info_exclude_stat),
2703 next + ouc_offset(info_exclude_sha1));
2704 load_sha1_stat(&uc->ss_excludes_file,
2705 next + ouc_offset(excludes_file_stat),
2706 next + ouc_offset(excludes_file_sha1));
2707 uc->dir_flags = get_be32(next + ouc_offset(dir_flags));
2708 exclude_per_dir = (const char *)next + ouc_offset(exclude_per_dir);
2709 uc->exclude_per_dir = xstrdup(exclude_per_dir);
2710 /* NUL after exclude_per_dir is covered by sizeof(*ouc) */
2711 next += ouc_size(strlen(exclude_per_dir));
2715 len = decode_varint(&next);
2716 if (next > end || len == 0)
2719 rd.valid = ewah_new();
2720 rd.check_only = ewah_new();
2721 rd.sha1_valid = ewah_new();
2725 ALLOC_ARRAY(rd.ucd, len);
2727 if (read_one_dir(&uc->root, &rd) || rd.index != len)
2731 len = ewah_read_mmap(rd.valid, next, end - next);
2736 len = ewah_read_mmap(rd.check_only, next, end - next);
2741 len = ewah_read_mmap(rd.sha1_valid, next, end - next);
2745 ewah_each_bit(rd.check_only, set_check_only, &rd);
2746 rd.data = next + len;
2747 ewah_each_bit(rd.valid, read_stat, &rd);
2748 ewah_each_bit(rd.sha1_valid, read_sha1, &rd);
2753 ewah_free(rd.valid);
2754 ewah_free(rd.check_only);
2755 ewah_free(rd.sha1_valid);
2758 free_untracked_cache(uc);
2764 static void invalidate_one_directory(struct untracked_cache *uc,
2765 struct untracked_cache_dir *ucd)
2767 uc->dir_invalidated++;
2769 ucd->untracked_nr = 0;
2773 * Normally when an entry is added or removed from a directory,
2774 * invalidating that directory is enough. No need to touch its
2775 * ancestors. When a directory is shown as "foo/bar/" in git-status
2776 * however, deleting or adding an entry may have cascading effect.
2778 * Say the "foo/bar/file" has become untracked, we need to tell the
2779 * untracked_cache_dir of "foo" that "bar/" is not an untracked
2780 * directory any more (because "bar" is managed by foo as an untracked
2783 * Similarly, if "foo/bar/file" moves from untracked to tracked and it
2784 * was the last untracked entry in the entire "foo", we should show
2785 * "foo/" instead. Which means we have to invalidate past "bar" up to
2788 * This function traverses all directories from root to leaf. If there
2789 * is a chance of one of the above cases happening, we invalidate back
2790 * to root. Otherwise we just invalidate the leaf. There may be a more
2791 * sophisticated way than checking for SHOW_OTHER_DIRECTORIES to
2792 * detect these cases and avoid unnecessary invalidation, for example,
2793 * checking for the untracked entry named "bar/" in "foo", but for now
2794 * stick to something safe and simple.
2796 static int invalidate_one_component(struct untracked_cache *uc,
2797 struct untracked_cache_dir *dir,
2798 const char *path, int len)
2800 const char *rest = strchr(path, '/');
2803 int component_len = rest - path;
2804 struct untracked_cache_dir *d =
2805 lookup_untracked(uc, dir, path, component_len);
2807 invalidate_one_component(uc, d, rest + 1,
2808 len - (component_len + 1));
2810 invalidate_one_directory(uc, dir);
2814 invalidate_one_directory(uc, dir);
2815 return uc->dir_flags & DIR_SHOW_OTHER_DIRECTORIES;
2818 void untracked_cache_invalidate_path(struct index_state *istate,
2821 if (!istate->untracked || !istate->untracked->root)
2823 invalidate_one_component(istate->untracked, istate->untracked->root,
2824 path, strlen(path));
2827 void untracked_cache_remove_from_index(struct index_state *istate,
2830 untracked_cache_invalidate_path(istate, path);
2833 void untracked_cache_add_to_index(struct index_state *istate,
2836 untracked_cache_invalidate_path(istate, path);
2839 /* Update gitfile and core.worktree setting to connect work tree and git dir */
2840 void connect_work_tree_and_git_dir(const char *work_tree_, const char *git_dir_)
2842 struct strbuf gitfile_sb = STRBUF_INIT;
2843 struct strbuf cfg_sb = STRBUF_INIT;
2844 struct strbuf rel_path = STRBUF_INIT;
2845 char *git_dir, *work_tree;
2847 /* Prepare .git file */
2848 strbuf_addf(&gitfile_sb, "%s/.git", work_tree_);
2849 if (safe_create_leading_directories_const(gitfile_sb.buf))
2850 die(_("could not create directories for %s"), gitfile_sb.buf);
2852 /* Prepare config file */
2853 strbuf_addf(&cfg_sb, "%s/config", git_dir_);
2854 if (safe_create_leading_directories_const(cfg_sb.buf))
2855 die(_("could not create directories for %s"), cfg_sb.buf);
2857 git_dir = real_pathdup(git_dir_, 1);
2858 work_tree = real_pathdup(work_tree_, 1);
2860 /* Write .git file */
2861 write_file(gitfile_sb.buf, "gitdir: %s",
2862 relative_path(git_dir, work_tree, &rel_path));
2863 /* Update core.worktree setting */
2864 git_config_set_in_file(cfg_sb.buf, "core.worktree",
2865 relative_path(work_tree, git_dir, &rel_path));
2867 strbuf_release(&gitfile_sb);
2868 strbuf_release(&cfg_sb);
2869 strbuf_release(&rel_path);
2875 * Migrate the git directory of the given path from old_git_dir to new_git_dir.
2877 void relocate_gitdir(const char *path, const char *old_git_dir, const char *new_git_dir)
2879 if (rename(old_git_dir, new_git_dir) < 0)
2880 die_errno(_("could not migrate git directory from '%s' to '%s'"),
2881 old_git_dir, new_git_dir);
2883 connect_work_tree_and_git_dir(path, new_git_dir);