0d6ae94783
sscanf is relatively loose (tolerate) on some invalid formats that we should fail instead of generating a wrong uuid structure, like with whitespaces and short strings. Add and use a helper function to first check the format. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Message-Id: <1474432046-325-11-git-send-email-famz@redhat.com>