Re: [PATCH 08/16] nfsd: escape high characters in binary data

From: J. Bruce Fields
Date: Mon Jun 24 2019 - 17:05:15 EST

On Sat, Jun 22, 2019 at 01:22:56PM -0700, Kees Cook wrote:
> On Sat, Jun 22, 2019 at 03:00:58PM -0400, J. Bruce Fields wrote:
> > The logic around ESCAPE_NP and the "only" string is really confusing. I
> > started assuming I could just add an ESCAPE_NONASCII flag and stick "
> > and \ into the "only" string, but it doesn't work that way.
> Yeah, if ESCAPE_NP isn't specified, the "only" characters are passed
> through. It'd be nice to have an "add" or a clearer way to do actual
> ctype subsets, etc. If there isn't an obviously clear way to refactor
> it, just skip it for now and I'm happy to ack your original patch. :)

There may well be some simplification possible here.... There aren't
really many users of "only", for example. I'll look into it some more.