Date: Thu, 27 Dec 2007 16:54:55 +0100 From: Roman Divacky <rdivacky@FreeBSD.org> To: John Baldwin <jhb@FreeBSD.org> Cc: arch@FreeBSD.org, freebsd-arch@FreeBSD.org Subject: Re: final decision about *at syscalls Message-ID: <20071227155455.GA23604@freebsd.org> In-Reply-To: <200712201138.56423.jhb@freebsd.org> References: <20071218092222.GA9695@freebsd.org> <200712201138.56423.jhb@freebsd.org>
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> Considering Robert's paper on security race problems in things like systrace > stemming from when you copy parameters out of userland and into the kernel > multiple times, I think #2 is definitely the better choice. Also, namei() is > already thread aware AFAICT since 'struct componentname' already contains a > 'cnp_thread' member (was 'cnp_proc' in 4.x). two strong voices for #2, I am going that way... thnx
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