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Message-ID: <20070610054628.GF21478@ftp.linux.org.uk>
Date: Sun, 10 Jun 2007 06:46:28 +0100
From: Al Viro <viro@....linux.org.uk>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: dean gaudet <dean@...tic.org>, Kyle Moffett <mrmacman_g4@....com>,
Ulrich Drepper <drepper@...hat.com>,
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 10:06:27PM -0700, Linus Torvalds wrote:
> Why the hell doesn't that thing just do an "fstat()" on the thing, and
> compare the inode number? Not that I would guarantee that it works either
> for a socket, but it would seem to make more sense than what it apparently
> does now, and I think it should work at least on Linux.
It works on Linux, all right.
> (Ie linux will give fake "st_ino" numbers to sockets. Whether anybody else
> will do that, I have no friggin clue. And you probably shouldn't depend on
> it even under Linux, but damn, despite all of those issues, it's likely
> better and more logical than what libnss-ldap apparently does now ;)
On FreeBSD it will simply give you zero st_ino on almost all sockets;
AF_UNIX ones get st_ino invented (and stable). st_dev is NODEV in all
cases...
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