K 10
svn:author
V 3
imp
K 8
svn:date
V 27
2018-05-31T02:57:51.063036Z
K 7
svn:log
V 238
Sanity check the return from the kernel.

We should be getting back as many bytes as we asked for, and we
don't handle shortages at all, so just reject anything that's
not right.

Differential Revision: https://reviews.freebsd.org/D15629

END