From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <13426df10707051258j34cf033dt10e99b79aaea0276@mail.gmail.com>
Date: Thu,  5 Jul 2007 12:58:15 -0700
From: "ron minnich" <rminnich@gmail.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu>
Subject: Re: [9fans] implementing 9p read
In-Reply-To: <84c03de05d2626f54ae08464b2933408@plan9.bell-labs.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <468D3D99.8010802@wmipf.in-berlin.de>
	<84c03de05d2626f54ae08464b2933408@plan9.bell-labs.com>
Topicbox-Message-UUID: 91abe1ce-ead2-11e9-9d60-3106f5b1d025

On 7/5/07, Sape Mullender <sape@plan9.bell-labs.com> wrote:

>
> Many control files are read using the helper routines readstr and readbuf
> (see 9p(2)).
> They extract from a string or buffer, the portion needed for the read
> command, given seek offset and byte count.  The string buffer is usually
> generated anew for each read.

another option is to only re-read when offset is 0. I.e., assume a
non-zero offset means 'still reading'.

But that approach has its own problems.

ron