_dowrite
if (!_dowrite(p, n, iop, &bufptr)) {\
if (!_dowrite(s, PAD_LEN, iop, &bufptr)) \
_dowrite(const char *p, ssize_t n, FILE *iop, unsigned char **ptrptr);
if (!_dowrite(tmpp, len, iop, bufptr)) {
if (!_dowrite(s, PAD_LEN, iop, bufptr))
if (!_dowrite(s, nn, iop, bufptr))
static void _dowrite(char *, ssize_t, FILE *, unsigned char **);
_dowrite((p), (n), iop, &bufptr); \
_dowrite((s), 20, iop, &bufptr); \