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Date:      Mon, 24 Jun 2002 10:46:13 -0700
From:      David Greenman-Lawrence <dg@root.com>
To:        Alfred Perlstein <alfred@FreeBSD.org>
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/kern uipc_syscalls.c
Message-ID:  <20020624104613.D6982@nexus.root.com>
In-Reply-To: <20020624172702.GV53232@elvis.mu.org>; from alfred@FreeBSD.org on Mon, Jun 24, 2002 at 10:27:02AM -0700
References:  <200206240642.g5O6gM327387@freefall.freebsd.org> <20020624011200.A6982@nexus.root.com> <20020624090931.GR53232@elvis.mu.org> <20020624101654.B6982@nexus.root.com> <20020624172702.GV53232@elvis.mu.org>

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>>    Actually, what I said was "Yes, this is going to require some backwords
>> compatibility gook before it is MFC'd."...and that was 6 months ago. It's
>> even more true today.
>>    Of course this hurdle was the reason it was never MFCed. I'm just thinking
>> about how much of a pain this is going to be to deal with it on all of the
>> DTI servers and figure that other people will choke on it, too.
>
>Ok, then just tell me what to do and I'll do the grunt work.

   I don't have any experience trying to do this, but my understanding is
that the syscall would need to be deprecated and renamed something like
osendfile(). osendfile() just becomes a compatibility shim (presumably
subtracting the header length from nbytes) and then calls the new syscall.

-DG

D.G.Lawrence
Download Technologies, Inc. - http://www.downloadtech.com - (866) 399 8500
TeraSolutions, Inc. - http://www.terasolutions.com - (503) 288 9544
The FreeBSD Project - http://www.freebsd.org
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