Message-ID: <4747D610.6040108@redhat.com>
Date: Fri, 23 Nov 2007 23:43:12 -0800
From: Ulrich Drepper <drepper@redhat.com>
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To: Eric Dumazet <dada1@cosmosbay.com>
CC: linux-kernel@vger.kernel.org, akpm@linux-foundation.org, mingo@elte.hu,
       tglx@linutronix.de, torvalds@linux-foundation.org
Subject: Re: [PATCHv5 4/5] Allow setting O_NONBLOCK flag for new sockets
References: <200711210728.lAL7SoJO015052@devserv.devel.redhat.com> <4747D00D.1090603@cosmosbay.com>
In-Reply-To: <4747D00D.1090603@cosmosbay.com>
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Eric Dumazet wrote:
> 1) Can the fd passing with recvmsg() on AF_UNIX also gets O_CLOEXEC
> support ?

Already there, see MSG_CMSG_CLOEXEC.


> 2) Why this O_NONBLOCK ability is needed for sockets ? Is it a security
> issue, and if yes could you remind it to me ?

No security issue.  But look at any correct network program, all need to
set the mode to non-blocking.  Adding this support to the syscall comes
at almost no cost and it cuts the cost for every program down by one or
two syscalls.

- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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