Date: Mon, 20 Jun 2011 18:19:51 +0400 From: Vasiliy Kulikov <segoon@...nwall.com> To: kernel-hardening@...ts.openwall.com Subject: Re: [RFC 2/5 v4] procfs: add hidepid= and gid= mount options On Mon, Jun 20, 2011 at 18:11 +0400, Solar Designer wrote: > Vasiliy - > > On Mon, Jun 20, 2011 at 04:58:10PM +0300, Alexey Dobriyan wrote: > > gid= is bad choice because > > a) e. g. VFAT uses uid=/gid= mount options to make all inodes to have > > certain uid/gid > > b) uid=/gid=, IIRC, will be added as generic VFS mount options (like ro) > > with semantics described in a) > > > > so having different semantics for /proc won't be good. > > I lost track of your proposals/patches. Aren't you currently proposing > that gid= would make all inodes have the specified gid? If not, why > not? Such semantics sound fine to me. That's what gid= does on procfs > on Linux 2.4.x-ow. With taskstats and similar mechanisms IMO it's better to use sysctls instead of procfs mount options as it would influence not only on procfs files. Thanks, -- Vasiliy
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