DIRENT_RECSIZE
if (reclen < DIRENT_RECSIZE(1) || reclen > len) {
de.d_reclen = DIRENT_RECSIZE(de.d_namlen);
tlen = DIRENT_RECSIZE(len) + NFS_DIRENT_OVERHEAD;
tlen = DIRENT_RECSIZE(len) + NFS_DIRENT_OVERHEAD;
DIRENT_RECSIZE((dp)->d_namlen)