dca_getbufbytes
if ((rv = dca_getbufbytes(in, 0,
if ((rv = dca_getbufbytes(in, len - des_ctx->dr_ctx.residlen,
rv = dca_getbufbytes(in, 0,
rv = dca_getbufbytes(in,
errno = dca_getbufbytes(out, off, DESBLOCK,
int dca_getbufbytes(crypto_data_t *, size_t, int, uchar_t *);