]> git.ipfire.org Git - thirdparty/git.git/blobdiff - dir.c
Merge branch 'fr_2.26.0' of github.com:jnavila/git
[thirdparty/git.git] / dir.c
diff --git a/dir.c b/dir.c
index 7d255227b130d7729747fe1a86c8efc04eee9f7e..0ffb1b3302452c2cce0bdaa55e5259d9be168b63 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -41,7 +41,8 @@ struct cached_dir {
        int nr_files;
        int nr_dirs;
 
-       struct dirent *de;
+       const char *d_name;
+       int d_type;
        const char *file;
        struct untracked_cache_dir *ucd;
 };
@@ -50,8 +51,8 @@ static enum path_treatment read_directory_recursive(struct dir_struct *dir,
        struct index_state *istate, const char *path, int len,
        struct untracked_cache_dir *untracked,
        int check_only, int stop_at_first_file, const struct pathspec *pathspec);
-static int get_dtype(struct dirent *de, struct index_state *istate,
-                    const char *path, int len);
+static int resolve_dtype(int dtype, struct index_state *istate,
+                        const char *path, int len);
 
 int count_slashes(const char *s)
 {
@@ -635,11 +636,42 @@ int pl_hashmap_cmp(const void *unused_cmp_data,
        return strncmp(ee1->pattern, ee2->pattern, min_len);
 }
 
+static char *dup_and_filter_pattern(const char *pattern)
+{
+       char *set, *read;
+       size_t count  = 0;
+       char *result = xstrdup(pattern);
+
+       set = result;
+       read = result;
+
+       while (*read) {
+               /* skip escape characters (once) */
+               if (*read == '\\')
+                       read++;
+
+               *set = *read;
+
+               set++;
+               read++;
+               count++;
+       }
+       *set = 0;
+
+       if (count > 2 &&
+           *(set - 1) == '*' &&
+           *(set - 2) == '/')
+               *(set - 2) = 0;
+
+       return result;
+}
+
 static void add_pattern_to_hashsets(struct pattern_list *pl, struct path_pattern *given)
 {
        struct pattern_entry *translated;
        char *truncated;
        char *data = NULL;
+       const char *prev, *cur, *next;
 
        if (!pl->use_cone_patterns)
                return;
@@ -656,17 +688,57 @@ static void add_pattern_to_hashsets(struct pattern_list *pl, struct path_pattern
                return;
        }
 
+       if (given->patternlen < 2 ||
+           *given->pattern == '*' ||
+           strstr(given->pattern, "**")) {
+               /* Not a cone pattern. */
+               warning(_("unrecognized pattern: '%s'"), given->pattern);
+               goto clear_hashmaps;
+       }
+
+       prev = given->pattern;
+       cur = given->pattern + 1;
+       next = given->pattern + 2;
+
+       while (*cur) {
+               /* Watch for glob characters '*', '\', '[', '?' */
+               if (!is_glob_special(*cur))
+                       goto increment;
+
+               /* But only if *prev != '\\' */
+               if (*prev == '\\')
+                       goto increment;
+
+               /* But allow the initial '\' */
+               if (*cur == '\\' &&
+                   is_glob_special(*next))
+                       goto increment;
+
+               /* But a trailing '/' then '*' is fine */
+               if (*prev == '/' &&
+                   *cur == '*' &&
+                   *next == 0)
+                       goto increment;
+
+               /* Not a cone pattern. */
+               warning(_("unrecognized pattern: '%s'"), given->pattern);
+               goto clear_hashmaps;
+
+       increment:
+               prev++;
+               cur++;
+               next++;
+       }
+
        if (given->patternlen > 2 &&
            !strcmp(given->pattern + given->patternlen - 2, "/*")) {
                if (!(given->flags & PATTERN_FLAG_NEGATIVE)) {
                        /* Not a cone pattern. */
-                       pl->use_cone_patterns = 0;
                        warning(_("unrecognized pattern: '%s'"), given->pattern);
                        goto clear_hashmaps;
                }
 
-               truncated = xstrdup(given->pattern);
-               truncated[given->patternlen - 2] = 0;
+               truncated = dup_and_filter_pattern(given->pattern);
 
                translated = xmalloc(sizeof(struct pattern_entry));
                translated->pattern = truncated;
@@ -700,7 +772,7 @@ static void add_pattern_to_hashsets(struct pattern_list *pl, struct path_pattern
 
        translated = xmalloc(sizeof(struct pattern_entry));
 
-       translated->pattern = xstrdup(given->pattern);
+       translated->pattern = dup_and_filter_pattern(given->pattern);
        translated->patternlen = given->patternlen;
        hashmap_entry_init(&translated->ent,
                           ignore_case ?
@@ -1002,8 +1074,8 @@ static int add_patterns(const char *fname, const char *base, int baselen,
                                oidcpy(&oid_stat->oid,
                                       &istate->cache[pos]->oid);
                        else
-                               hash_object_file(buf, size, "blob",
-                                                &oid_stat->oid);
+                               hash_object_file(the_hash_algo, buf, size,
+                                                "blob", &oid_stat->oid);
                        fill_stat_data(&oid_stat->stat, &st);
                        oid_stat->valid = 1;
                }
@@ -1215,8 +1287,7 @@ static struct path_pattern *last_matching_pattern_from_list(const char *pathname
                int prefix = pattern->nowildcardlen;
 
                if (pattern->flags & PATTERN_FLAG_MUSTBEDIR) {
-                       if (*dtype == DT_UNKNOWN)
-                               *dtype = get_dtype(NULL, istate, pathname, pathlen);
+                       *dtype = resolve_dtype(*dtype, istate, pathname, pathlen);
                        if (*dtype != DT_DIR)
                                continue;
                }
@@ -1842,10 +1913,9 @@ static int get_index_dtype(struct index_state *istate,
        return DT_UNKNOWN;
 }
 
-static int get_dtype(struct dirent *de, struct index_state *istate,
-                    const char *path, int len)
+static int resolve_dtype(int dtype, struct index_state *istate,
+                        const char *path, int len)
 {
-       int dtype = de ? DTYPE(de) : DT_UNKNOWN;
        struct stat st;
 
        if (dtype != DT_UNKNOWN)
@@ -1870,14 +1940,13 @@ static enum path_treatment treat_one_path(struct dir_struct *dir,
                                          struct strbuf *path,
                                          int baselen,
                                          const struct pathspec *pathspec,
-                                         int dtype, struct dirent *de)
+                                         int dtype)
 {
        int exclude;
        int has_path_in_index = !!index_file_exists(istate, path->buf, path->len, ignore_case);
        enum path_treatment path_treatment;
 
-       if (dtype == DT_UNKNOWN)
-               dtype = get_dtype(de, istate, path->buf, path->len);
+       dtype = resolve_dtype(dtype, istate, path->buf, path->len);
 
        /* Always exclude indexed files */
        if (dtype != DT_DIR && has_path_in_index)
@@ -1985,21 +2054,18 @@ static enum path_treatment treat_path(struct dir_struct *dir,
                                      int baselen,
                                      const struct pathspec *pathspec)
 {
-       int dtype;
-       struct dirent *de = cdir->de;
-
-       if (!de)
+       if (!cdir->d_name)
                return treat_path_fast(dir, untracked, cdir, istate, path,
                                       baselen, pathspec);
-       if (is_dot_or_dotdot(de->d_name) || !fspathcmp(de->d_name, ".git"))
+       if (is_dot_or_dotdot(cdir->d_name) || !fspathcmp(cdir->d_name, ".git"))
                return path_none;
        strbuf_setlen(path, baselen);
-       strbuf_addstr(path, de->d_name);
+       strbuf_addstr(path, cdir->d_name);
        if (simplify_away(path->buf, path->len, pathspec))
                return path_none;
 
-       dtype = DTYPE(de);
-       return treat_one_path(dir, untracked, istate, path, baselen, pathspec, dtype, de);
+       return treat_one_path(dir, untracked, istate, path, baselen, pathspec,
+                             cdir->d_type);
 }
 
 static void add_untracked(struct untracked_cache_dir *dir, const char *name)
@@ -2087,10 +2153,17 @@ static int open_cached_dir(struct cached_dir *cdir,
 
 static int read_cached_dir(struct cached_dir *cdir)
 {
+       struct dirent *de;
+
        if (cdir->fdir) {
-               cdir->de = readdir(cdir->fdir);
-               if (!cdir->de)
+               de = readdir(cdir->fdir);
+               if (!de) {
+                       cdir->d_name = NULL;
+                       cdir->d_type = DT_UNKNOWN;
                        return -1;
+               }
+               cdir->d_name = de->d_name;
+               cdir->d_type = DTYPE(de);
                return 0;
        }
        while (cdir->nr_dirs < cdir->untracked->dirs_nr) {
@@ -2216,7 +2289,7 @@ static enum path_treatment read_directory_recursive(struct dir_struct *dir,
                /* recurse into subdir if instructed by treat_path */
                if ((state == path_recurse) ||
                        ((state == path_untracked) &&
-                        (get_dtype(cdir.de, istate, path.buf, path.len) == DT_DIR) &&
+                        (resolve_dtype(cdir.d_type, istate, path.buf, path.len) == DT_DIR) &&
                         ((dir->flags & DIR_SHOW_IGNORED_TOO) ||
                          (pathspec &&
                           do_match_pathspec(istate, pathspec, path.buf, path.len,
@@ -2308,16 +2381,16 @@ static int treat_leading_path(struct dir_struct *dir,
         * WARNING WARNING WARNING:
         *
         * Any updates to the traversal logic here may need corresponding
-        * updates in treat_leading_path().  See the commit message for the
-        * commit adding this warning as well as the commit preceding it
-        * for details.
+        * updates in read_directory_recursive().  See 777b420347 (dir:
+        * synchronize treat_leading_path() and read_directory_recursive(),
+        * 2019-12-19) and its parent commit for details.
         */
 
        struct strbuf sb = STRBUF_INIT;
+       struct strbuf subdir = STRBUF_INIT;
        int prevlen, baselen;
        const char *cp;
        struct cached_dir cdir;
-       struct dirent *de;
        enum path_treatment state = path_none;
 
        /*
@@ -2342,22 +2415,8 @@ static int treat_leading_path(struct dir_struct *dir,
        if (!len)
                return 1;
 
-       /*
-        * We need a manufactured dirent with sufficient space to store a
-        * leading directory component of path in its d_name.  Here, we
-        * assume that the dirent's d_name is either declared as
-        *    char d_name[BIG_ENOUGH]
-        * or that it is declared at the end of the struct as
-        *    char d_name[]
-        * For either case, padding with len+1 bytes at the end will ensure
-        * sufficient storage space.
-        */
-       de = xcalloc(1, st_add3(sizeof(struct dirent), len, 1));
        memset(&cdir, 0, sizeof(cdir));
-       cdir.de = de;
-#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
-       de->d_type = DT_DIR;
-#endif
+       cdir.d_type = DT_DIR;
        baselen = 0;
        prevlen = 0;
        while (1) {
@@ -2374,15 +2433,20 @@ static int treat_leading_path(struct dir_struct *dir,
                        break;
                strbuf_reset(&sb);
                strbuf_add(&sb, path, prevlen);
-               memcpy(de->d_name, path+prevlen, baselen-prevlen);
-               de->d_name[baselen-prevlen] = '\0';
+               strbuf_reset(&subdir);
+               strbuf_add(&subdir, path+prevlen, baselen-prevlen);
+               cdir.d_name = subdir.buf;
                state = treat_path(dir, NULL, &cdir, istate, &sb, prevlen,
                                    pathspec);
                if (state == path_untracked &&
-                   get_dtype(cdir.de, istate, sb.buf, sb.len) == DT_DIR &&
+                   resolve_dtype(cdir.d_type, istate, sb.buf, sb.len) == DT_DIR &&
                    (dir->flags & DIR_SHOW_IGNORED_TOO ||
                     do_match_pathspec(istate, pathspec, sb.buf, sb.len,
                                       baselen, NULL, DO_MATCH_LEADING_PATHSPEC) == MATCHED_RECURSIVELY_LEADING_PATHSPEC)) {
+                       if (!match_pathspec(istate, pathspec, sb.buf, sb.len,
+                                           0 /* prefix */, NULL,
+                                           0 /* do NOT special case dirs */))
+                               state = path_none;
                        add_path_to_appropriate_result_list(dir, NULL, &cdir,
                                                            istate,
                                                            &sb, baselen,
@@ -2399,7 +2463,7 @@ static int treat_leading_path(struct dir_struct *dir,
                                            &sb, baselen, pathspec,
                                            state);
 
-       free(de);
+       strbuf_release(&subdir);
        strbuf_release(&sb);
        return state == path_recurse;
 }