chris@umcp-cs.UUCP (06/16/83)
It's not really necessary, but it's used so that ioctl calls on the
file descriptor will work. Without write permission you ``aren't
allowed'' to stty(). I put that in quotes because you really are
allowed to, at least in 4.1BSD (and probably everything except 4.2
where they will finally do the "impractical"?)
- Chris
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