rem: vnode, cookie, pos, *len));
add: vnode, cookie, pos, *_length));
context: rootfs_write(fs_volume fs, fs_vnode vnode, fs_cookie cookie, 	off_t pos, const void *buffer, size_t *_length){	TRACE(("rootfs_write: vnode %p, cookie %p, pos 0x%Lx , len 0x%lx\n", 		vnode, cookie, pos, *len));	return EPERM;}