If the caller gives "/vicep" or "vicep" to volutil_GetPartitionID(),
we'll strlcpy() an empty string into ascii[], setting ascii[0] to 0.
Then we check the value of ascii[1], which is uninitialized.
This doesn't result in any bad behavior, because we then immediately
check the value of ascii[0] (which is 0), and return -1. But reading
the uninitialized ascii[1] triggers errors in tools like valgrind, and
is possibly fragile for future code changes.
To avoid this, make sure ascii[] is initialized at the start of the
function, and check if we have copied an empty string into ascii[].
While we are here, also add tests in volutil-t for invalid "vicep*"
strings, to match the existing tests for invalid "/vicep*" strings.
Change-Id: I724f893d4bb6421b955c1c89629ab9f277be98bc
Reviewed-on: https://gerrit.openafs.org/15526
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Cheyenne Wills <cwills@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Add unit tests for the utility functions to convert between partition
names and partition ids.
Change-Id: I4b12f9d611cb9f3ce49909cda5cbcedd3e6c3d10
Reviewed-on: https://gerrit.openafs.org/13176
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: Benjamin Kaduk <kaduk@mit.edu>
