linux-kernel - Re: [patch 7/8] fdmap v2

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Message-ID: <20070610024044.GB21478@ftp.linux.org.uk>
Date:	Sun, 10 Jun 2007 03:40:44 +0100
From:	Al Viro <viro@....linux.org.uk>
To:	Kyle Moffett <mrmacman_g4@....com>
Cc:	Ulrich Drepper <drepper@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Davide Libenzi <davidel@...ilserver.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Theodore Tso <tytso@....edu>,
	Eric Dumazet <dada1@...mosbay.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [patch 7/8] fdmap v2 - implement sys_socket2

On Sat, Jun 09, 2007 at 03:27:43PM -0400, Kyle Moffett wrote:
> SCENARIO 1:
> 
> Program Thread:   Library Thread:
>                   fd = socket(AF_*, SOCK_*, 0);
> fork();
>                   int x = FD_CLOEXEC;
>                   fcntl(fd, F_SETFD, &x);

BTW, regardless of anything else, in such situation this "library
thread" would be better off by just having independent descriptors.
We _can_ do that just fine.

That is, if library code using such stuff would be OK with being a thread.
Any specific examples one way or another?
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