On Tue, Aug 15, 2017 at 08:19:13AM +0100, Jonny Grant wrote: > On 15/08/17 00:50, Paul Eggert wrote: > > Jonny Grant wrote: > >> do you know which kernel API has this limitation? > > > > All kernels have a limitation there to some extent, except perhaps the > > Hurd. Sorry, I don't know what the limits are. > > Ok thank you. > > I imagine kernels just need a dynamic API, so it doesn't need to be a > fixed buffer.
It's a security limit rather than a fixed buffer, see e.g. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=da029c11e6b12f321f36dac8771e833b65cec962 -- ldv
