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Date: Thu, 26 Oct 1995 05:11:25 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199510251911.FAA17483@godzilla.zeta.org.au>
To: CVS-commiters@freefall.freebsd.org, bde@freefall.freebsd.org,
        cvs-sys@freefall.freebsd.org
Subject: Re: cvs commit: src/sys/kern tty_pty.c
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>  Modified:    sys/kern  tty_pty.c
>  Log:
>  Fixed data loss in writes to pty masters.  Data was almost always lost
>  at the end of each write for writes of more than 1K.
>  
>  Fixed handling of residual count for early returns in writes to pty masters.
>  It was only adjusted in 2 out of 6 cases.

These changes should be in 2.1 too.  Sigh.  They should be checked more
carefully than the changes in tty_subr.c.  I'm not sure what happens in
the PF_REMOTE case.  cc can only be 0 in that case if the PF_REMOTE flag
changed.  If that can happen, then cc may be too large to fit in the canq
and not everything is written.

Bruce