On 10/08/2015 06:02 AM, Herbert Xu wrote: > On Thu, Oct 01, 2015 at 10:10:38PM -0700, Tadeusz Struk wrote: >> >> +/** >> + * mpi_write_to_sgl() - Funnction exports MPI to an sgl (msb first) >> + * >> + * This function works in the same way as the mpi_read_buffer, but it >> + * takes an sgl instead of u8 * buf. >> + * >> + * @a: a multi precision integer >> + * @sgl: scatterlist to write to. Needs to be at least >> + * mpi_get_size(a) long. >> + * @nbytes: receives the actual length of the data written. >> + * @sign: if not NULL, it will be set to the sign of a. >> + * >> + * Return: 0 on success or error code in case of error >> + */ >> +int mpi_write_to_sgl(MPI a, struct scatterlist *sgl, unsigned *nbytes, >> + int *sign) > > Where is the maximum length of sgl? You should not assume that the > entire SG list is for you to use. So the length that you are allowed > to use should be passed in explicitly. You can just put it into > nbytes. The sgl has to be big enough to take the whole integer. What would be the point to export only part of a number? -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
