Date: Sun, 11 May 1997 12:17:04 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-hackers@FreeBSD.ORG Subject: Re: socketpair() Message-ID: <19970511121704.ZH16966@uriah.heep.sax.de> In-Reply-To: <199705110829.SAA04202@labs.usn.blaze.net.au>; from David Nugent on May 11, 1997 18:29:43 %2B1000 References: <9705102044.AA01420@gnu.sdsp.mc.xerox.com> <199705110829.SAA04202@labs.usn.blaze.net.au>
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As David Nugent wrote: > pipe() should too, I think. I've never come across an implementation > that doesn't. Or, at least it doesn't seem to matter which returned > handle you use for reading and which for writing. All FreeBSD versions before this did (translates into ``FreeBSD < 2.2''): RCS file: /home/cvs/src/sys/kern/uipc_syscalls.c,v Working file: /sys/kern/uipc_syscalls.c ... revision 1.11 date: 1996/01/01 10:28:21; author: peter; state: Exp; lines: +3 -3 Make pipe() return a set of bidirectional pipe fd's rather than one-way only just like on SVR4. This has no effect on any current programs in our source, but makes the use of SVR4 code a little easier. There is no code or implementation cost in the kernel.. This two-line change merely sets the modes on the ends of the pipes to be bidirectional. There are no other changes. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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