From mboxrd@z Thu Jan  1 00:00:00 1970
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In-Reply-To: <20150621104444.GA7504@dinah>
References: <20150621104444.GA7504@dinah>
Date: Sun, 21 Jun 2015 13:35:40 +0100
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From: Charles Forsyth <charles.forsyth@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] Why does pread(2) modify the channel offset?
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On 21 June 2015 at 11:44, Anthony Martin <ality@pbrane.org> wrote:

> Thoughts?


As with programming language specifications, when it says "equivalent" it
is ignoring any subtle differences.

Neither call is supposed to change the offset, although it wasn't noticed
for the reason you gave.
One exception is reading directories, where pread should act the same as
read.

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<div dir=3D"ltr"><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">=
On 21 June 2015 at 11:44, Anthony Martin <span dir=3D"ltr">&lt;<a href=3D"m=
ailto:ality@pbrane.org" target=3D"_blank">ality@pbrane.org</a>&gt;</span> w=
rote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;borde=
r-left:1px #ccc solid;padding-left:1ex">Thoughts?</blockquote></div><br>As =
with programming language specifications, when it says &quot;equivalent&quo=
t; it is ignoring any subtle differences.</div><div class=3D"gmail_extra"><=
br></div><div class=3D"gmail_extra">Neither call is supposed to change the =
offset, although it wasn&#39;t noticed for the reason you gave.</div><div c=
lass=3D"gmail_extra">One exception is reading directories, where pread shou=
ld act the same as read.</div></div>

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