Date: Sat, 19 Jan 2008 15:42:41 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: Alfred Perlstein <alfred@freebsd.org> Cc: freebsd-current@FreeBSD.org, Jung-uk Kim <jkim@FreeBSD.org>, freebsd-arch@FreeBSD.org Subject: Re: [RFC] SysV SHM on 64-bit platforms Message-ID: <20080119154147.E91115@fledge.watson.org> In-Reply-To: <20080119122657.GN99258@elvis.mu.org> References: <200801181217.52788.jkim@FreeBSD.org> <20080119122657.GN99258@elvis.mu.org>
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On Sat, 19 Jan 2008, Alfred Perlstein wrote: >> FYI, fixing ipc_perm is a lot more complicated and very intrusive. > > Why does ipc_perm need fixing? It is desparately broken due to using 16-bit types for uids and gids. Fixing it really tears up the ABI, unfortunately, and requires quite a bit of compat code writing. When there, there are some other types in ipc_perm that would also like to be fixed. Robert N M Watson Computer Laboratory University of Cambridge
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