K 10
svn:author
V 5
brian
K 8
svn:date
V 27
2009-08-27T07:11:47.175903Z
K 7
svn:log
V 567
MFC: When ``ppp -direct'' is invoked by a program that uses pipe(2) to
     create stdin and stdout, don't blindly try to use stdin as a bi-directional
     channel.  Instead, detect the pipe and set up a special exec handler
     that indirects write() calls through stdout.

     This fixes the problem where ``set device "!ssh -e none host ppp
     -direct label"'' no longer works with an openssh-5.2 server side as
     that version of openssh ignores the USE_PIPES config setting and
     *always* uses pipes (rather than socketpair) for stdin/stdout channels.

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