Andy Lutomirski <luto@xxxxxxxxxx> wrote: > > Allow a buffer to be marked such that read() must return the entire buffer > > in one go or return ENOBUFS. Multiple buffers can be amalgamated into a > > single read, but a short read will occur if the next "whole" buffer won't > > fit. > > > > This is useful for watch queue notifications to make sure we don't split a > > notification across multiple reads, especially given that we need to > > fabricate an overrun record under some circumstances - and that isn't in > > the buffers. > > Hmm. I'm not totally in love with introducing a new error code like > this for read(), especially if it could affect the kind of pipe that > is bound to a file in a filesystem. But maybe it's not a problem. EMSGSIZE might be better? David
