From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <44809f38e4eeaf493d03cc1f401dba7d@vitanuova.com>
From: C H Forsyth <forsyth@vitanuova.com>
Date: Fri,  6 Jul 2007 15:57:21 +0100
To: 9fans@cse.psu.edu
Subject: Re: [9fans] implementing 9p read
In-Reply-To: <93f71afb320e8cd61cd2ff3f9f08ebbe@quintile.net>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Topicbox-Message-UUID: 91eb3b12-ead2-11e9-9d60-3106f5b1d025

>You cannot do this, the usual idiom is that if read returns less
>than the app expected this is treated as EOF. in my library the low level

a write that returns less than was written is trouble, but end-of-file is a read returning zero.
the count returned by read can be less than the amount requested without marking end-of-file (eg, reads on a pipe
or network connection).  that's why readn exists.