K 10
svn:author
V 3
imp
K 8
svn:date
V 27
2018-08-23T05:05:47.444427Z
K 7
svn:log
V 348
Create devctl freeze/thaw.

This adds it to devctl, libdevctl, defines the two IOCTLs and
implements the kernel bits. causes any new drivers that are added via
kldload to be deferred until a 'thaw' comes in. These do not stack: it
is an error to freeze while frozen, or thaw while thawed.

Differential Revision: https://reviews.freebsd.org/D16735

END