[incfs] Require an ioctl to get filled blocks

+ fix an FD leak in UniqueConrol move
+ fix a potential FD leak in makeControl()

Bug: 152983639
Test: atest libincfs-test
Change-Id: Ic002768a5a9c29ae76d33c46565f8778a4af8752
Merged-In: Ic002768a5a9c29ae76d33c46565f8778a4af8752
10 files changed
tree: ed1e213357194104c4885ea3f28ae0daa4722984
  1. .clang-format
  2. PREUPLOAD.cfg
  3. incfs/
  4. libdataloader/