chris...@astron.com (Christos Zoulas) wrote: >In article <x7wp3xi6py....@ren.fdy2.co.uk>, >Robert Swindells <r...@fdy2.co.uk> wrote: >> >>I wrote: >>>Does anyone know why we don't use the input 'optlen' parameter to the >>>getsockopt(2) syscall, we do write back to it on return.
[snip] >Neither FreeBSD or OpenBSD copyin the value, but I think it is ok to >do so if it is useful to read the input to deduce the output. But that >would make the call asymetric, so let's examine the examples where this >is useful first. FreeBSD does copyin the value, but the code to do it is scattered around the kernel, search for sooptcopyin() in their tree. Robert Swindells
