K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2017-09-21T23:05:32.885124Z
K 7
svn:log
V 404
Only handle _PC_MAX_CANON, _PC_MAX_INPUT, and _PC_VDISABLE for TTY devices.

Move handling of these three pathconf() variables out of vop_stdpathconf()
and into devfs_pathconf() as TTY devices can only be devfs files.  In
addition, only return settings for these three variables for devfs devices
whose device switch has the D_TTY flag set.

Discussed with:	bde, kib
Sponsored by:	Chelsio Communications

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