From: Stephen Hemminger <[EMAIL PROTECTED]>
Date: Fri, 8 Dec 2006 09:50:55 -0800

> ioctl(TCSBRK,1)       errno
> pty           0
> pipe          22/EINVAL
> /dev/null     25/ENOTTY
> reg_file      25/ENOTTY
> socket                14/EFAULT

If you call a TTY ioctl on a socket, it might not work, don't
you think?

ioctl values are numbered in the namespace of the object they are
called upon, so an ioctl of value X can mean something different for a
TTY than it does for socket.

You're passing a garbage pointer to whatever socket ioctl happens
to be aliased to the same value as TCSBRK on your platform.
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