K 10
svn:author
V 2
ed
K 8
svn:date
V 27
2011-07-02T13:54:20.208166Z
K 7
svn:log
V 401
Reintroduce the cioctl() hook in the TTY layer for digi(4).

The cioctl() hook can be used by drivers to add ioctls to the *.init and
*.lock devices. This commit breaks the ttydevsw ABI, since this
structure didn't provide any padding. To prevent ABI breakage in the
future, add a tsw_spare.

Submitted by:	Peter Jeremy <peter jeremy alcatel lucent com>
Obtained from:	kern/152254 (slightly modified)

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