apexd: set MountedApexData's device_name correctly

Previously, device_name field is set even when dm-verity
is not engaged. This may result an unnecessary device-mapper deletion
on deactivation.

Now, it is set only when APEX is mounted via dm-verity.

Note:
For now, "Unmount" doesn't delete a DM device temporarily (b/130013353).

Test: atest apexservice_test
Change-Id: I5338200a1c07a0c5d7ae1d19d7d53231db6cd2b2
1 file changed
tree: c28bd25b837b23aabefc368973481734ca6054c1
  1. apexd/
  2. apexer/
  3. proto/
  4. shim/
  5. tests/
  6. CleanSpec.mk
  7. OWNERS
  8. PREUPLOAD.cfg