- add and use bb_opendir(), bb_xopendir().

text    data     bss     dec     hex filename
 889445    9392 1035784 1934621  1d851d busybox.gcc-4.2.orig
 889297    9392 1035784 1934473  1d8489 busybox.gcc-4.2
 889009    9820 1037860 1936689  1d8d31 busybox.gcc-4.1.orig
 888817    9820 1037860 1936497  1d8c71 busybox.gcc-4.1

libbb/copy_file.c

@@ -92,8 +92,7 @@ int copy_file(const char *source, const char *dest, int flags)
 		}
 
 		/* Recursively copy files in SOURCE.  */
-		if ((dp = opendir(source)) == NULL) {
-			bb_perror_msg("unable to open directory `%s'", source);
+		if ((dp = bb_opendir(source)) == NULL) {
 			status = -1;
 			goto preserve_status;
 		}