On Fri, Jun 23, 2017 at 03:58:35AM -0700, Joe Perches wrote: > getsockopt says: > > For getsockopt(), optlen is a value-result argument, initially containing the > size > of the buffer pointed to by optval, and modified on return to indicate the > actual > size of the value returned
In the original code, it's not returning the "actual size of the value returned". It's returning a smaller or equal value... The man page is correct that this is how some getsockopts work, of course. But here -EFAULT is expected. regards, dan carpenter
