Date: Sat, 17 Mar 2001 18:00:55 +0200 From: Peter Pentchev <roam@orbitel.bg> To: Dag-Erling Smorgrav <des@ofug.org> Cc: Tony Finch <dot@dotat.at>, Duncan Barclay <dmlb@dmlb.org>, Kris Kennaway <kris@obsecurity.org>, hackers@FreeBSD.ORG, fs@FreeBSD.ORG Subject: Re: httpfs Message-ID: <20010317180055.A486@ringworld.oblivion.bg> In-Reply-To: <xzpvgp8cry9.fsf@flood.ping.uio.no>; from des@ofug.org on Sat, Mar 17, 2001 at 04:53:34PM %2B0100 References: <20010310031515.A8998@mollari.cthul.hu> <20010315095533.C12432@ringworld.oblivion.bg> <000d01c0ad3c$0ed83fb0$d26020c2@Cadence.COM> <000d01c0ad3c$0ed83fb0$d26020c2@Cadence.COM> <20010315124244.A442@ringworld.oblivion.bg> <20010316054649.F385@hand.dotat.at> <20010316174424.A428@ringworld.oblivion.bg> <xzpvgp8cry9.fsf@flood.ping.uio.no>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sat, Mar 17, 2001 at 04:53:34PM +0100, Dag-Erling Smorgrav wrote: > Peter Pentchev <roam@orbitel.bg> writes: > > There was at the time - socketpair(2) had totally slipped my mind ;) > > Umm, you want pipe(2), not socketpair(2). Actually, I want socketpair(2). pipe(2) was what I used before, and that's the reason I had a read-only file descriptor - the portalfs architecture allows for only one fd to be returned, and pipe(2) provides a one-way pipe. I dup2'd stdout and stderr of the executed program to the child fd, and the parent could read its output, yet not write to its stdin. With socketpair(2), I can dup stdin, too, and have mount_portal return a two-way pipe/fd/socket to whoever requested it. At least, that's the common/standard/easiest way to create a two-way pipe on the same fd, described in APUE :) G'luck, Peter -- This would easier understand fewer had omitted. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010317180055.A486>