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Date:      Mon, 14 Dec 1998 19:17:24 -0800 (PST)
From:      Matthew Jacob <mjacob@feral.com>
To:        Greg Lehey <grog@lemis.com>
Cc:        freebsd-current@FreeBSD.ORG
Subject:   Re: Tape Driver Changes Proposed: Tape Early Warning Behaviour
Message-ID:  <Pine.LNX.4.04.9812141916280.2563-100000@feral-gw>
In-Reply-To: <19981215132513.I15633@freebie.lemis.com>

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> I've probably missed something here, but what is the intention in (ii)
> or clearing EOM?  What's wrong with:
> 
>    i)   write(fd, buf, 1024) returns 1024 (1024 bytes written) [ EOM flagged ]
>    ii)  write(fd, buf, 1024) returns 0 (zero bytes moved)
>    iii) write(fd, buf, 1024) will return -1 (ENOSPC or EIO - I don't care).

So that the tape driver knows for #iii not to just return 0 (zero bytes
moved).

-matt



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