K 10
svn:author
V 7
asomers
K 8
svn:date
V 27
2018-01-08T00:10:45.247630Z
K 7
svn:log
V 408
geli: optimize tests

Reduce the geli tests' runtime by about a third:

* In integrity_test:copy, use a file-backed md(4) device instead of a
  malloc'd one.  That way we can corrupt the underlying storage without
  needing to detach and reattach the geli device.

* In integrity_test:{copy, hmac, data} and onetime_test:{onetime,
  onetime_a}, move reads of /dev/random out of the loop.

MFC after:	2 weeks

END