Am Donnerstag, 9. Juni 2016, 11:18:04 schrieb Mat Martineau: Hi Mat, > > Or is your concern that the user space interface restricts things too much > > and thus prevents a valid use case? > > The latter - my primary concern is the constraint this places on userspace > by forcing larger buffer sizes than might be necessary for the operation. > struct akcipher_request has separate members for src_len and dst_len, and > dst_len is documented as needing "to be at least as big as the expected > result depending on the operation". Not the maximum result, the expected > result. It's also documented that the cipher will generate an error if > dst_len is insufficient and update the value with the required size. > > I'm updating some userspace TLS code that worked with an earlier, unmerged > patch set for AF_ALG akcipher (from last year). The read calls with > shorter buffers were the main porting problem. I see -- are you proposing to drop that check entirely? Ciao Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
