BIO_FP_READ
BIO_CLOSE|BIO_FP_READ,(char *)name)
BIO_CLOSE|BIO_FP_READ|BIO_FP_WRITE,name)
if (num & BIO_FP_READ)
} else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
else if (num & BIO_FP_READ)