HsSysError(pf, error) int pf; int error;
HsSysError(int pf, int error)
HsSysError(pf, error)int pf;int error;{	handshake_t handshake;	handshake.status = PTY_FATALERROR;	handshake.error = errno;	handshake.fatal_error = error;	strcpy(handshake.buffer, ttydev);	write(pf, (char *) &handshake, sizeof(handshake));	exit(error);}