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Re: [Qemu-devel] [PATCH 2/9] struct iovec is now universally available


From: M. Warner Losh
Subject: Re: [Qemu-devel] [PATCH 2/9] struct iovec is now universally available
Date: Wed, 15 Apr 2009 15:52:24 -0600 (MDT)

In message: <address@hidden>
            "Fran├žois Revol" <address@hidden> writes:
: > On Wed, 2009-04-15 at 18:55 +0200, Christoph Hellwig wrote:
: > > On Wed, Apr 15, 2009 at 05:29:22PM +0100, Mark McLoughlin wrote:
: > > > struct iovec is now defined in qemu-common.h if needed, so we 
: > > > don't need
: > > > the tap code to handle !defined(HAVE_IOVEC).
: > > 
: > > But is the writev system call also universally available?
: > 
: > Fair point.
: > 
: > I don't know of anywhere that qemu currently builds where writev() 
: > isn't
: > available ... do you?
: 
: Even BeOS has writev :P

writev(2) was used in the 4.2BSD network daemons, so it tended to be
picked up by everybody that picked up the BSD TCP network
stack/interface.

Warner




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