tree a4a42a525f93d0de2d99e0a50dccb3b4f36e555d
parent de79ee05abd7e1b29b3074b0150b5f4eabf7cf9e
author Patrick Venture <venture@google.com> 1557352975 -0700
committer Patrick Venture <venture@google.com> 1557353586 -0700

explicitly expect a directory for logging

Verify the logging parameter is explicitly a directory.  Treat the path
as a directory for creating the logging files.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I84d6be79780df3f52deeb1ff1b7a50de6175c055