From owner-cvs-all  Fri Jul 23 21:54:39 1999
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Date: Sat, 24 Jul 1999 14:53:05 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199907240453.OAA15384@godzilla.zeta.org.au>
To: brian@Awfulhak.org, jmg@FreeBSD.org
Subject: Re: cvs commit: src/sys/net if_tun.c
Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org
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>I don't think I agree that writing 0 bytes should result in EIO, 
>perhaps EINVAL would be more apt ?

Both are surprising.  POSIX.1 requires writing 0 bytes to a regular
file to succeed and have no effect (e.g., it must not change the
modification time).  Why should it behave differently for devices?

Bruce


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