refs: convert parameter of create_dir_entry() to length-limited string

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/refs.c b/refs.c
index c028333..c5e167b 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -294,12 +294,13 @@ static void clear_ref_dir(struct ref_dir *dir)
  * "refs/heads/") or "" for the top-level directory.
  */
 static struct ref_entry *create_dir_entry(struct ref_cache *ref_cache,
-                                         const char *dirname, int incomplete)
+                                         const char *dirname, size_t len,
+                                         int incomplete)
 {
        struct ref_entry *direntry;
-       int len = strlen(dirname);
        direntry = xcalloc(1, sizeof(struct ref_entry) + len + 1);
-       memcpy(direntry->name, dirname, len + 1);
+       memcpy(direntry->name, dirname, len);
+       direntry->name[len] = '\0';
        direntry->u.subdir.ref_cache = ref_cache;
        direntry->flag = REF_DIR | (incomplete ? REF_INCOMPLETE : 0);
        return direntry;
@@ -364,7 +365,7 @@ static struct ref_dir *search_for_subdir(struct ref_dir *dir,
                 * therefore, create an empty record for it but mark
                 * the record complete.
                 */
-               entry = create_dir_entry(dir->ref_cache, subdirname, 0);
+               entry = create_dir_entry(dir->ref_cache, subdirname, len, 0);
                add_entry_to_dir(dir, entry);
        }
        return get_ref_dir(entry);
@@ -823,7 +824,7 @@ static struct ref_dir *get_packed_refs(struct ref_cache *refs)
                const char *packed_refs_file;
                FILE *f;
 
-               refs->packed = create_dir_entry(refs, "", 0);
+               refs->packed = create_dir_entry(refs, "", 0, 0);
                if (*refs->name)
                        packed_refs_file = git_path_submodule(refs->name, "packed-refs");
                else
@@ -888,7 +889,8 @@ static void read_loose_refs(const char *dirname, struct ref_dir *dir)
                } else if (S_ISDIR(st.st_mode)) {
                        strbuf_addch(&refname, '/');
                        add_entry_to_dir(dir,
-                                        create_dir_entry(refs, refname.buf, 1));
+                                        create_dir_entry(refs, refname.buf,
+                                                         refname.len, 1));
                } else {
                        if (*refs->name) {
                                hashclr(sha1);
@@ -918,12 +920,12 @@ static struct ref_dir *get_loose_refs(struct ref_cache *refs)
                 * are about to read the only subdirectory that can
                 * hold references:
                 */
-               refs->loose = create_dir_entry(refs, "", 0);
+               refs->loose = create_dir_entry(refs, "", 0, 0);
                /*
                 * Create an incomplete entry for "refs/":
                 */
                add_entry_to_dir(get_ref_dir(refs->loose),
-                                create_dir_entry(refs, "refs/", 1));
+                                create_dir_entry(refs, "refs/", 5, 1));
        }
        return get_ref_dir(refs->loose);
 }