ANDROID: fuse-bpf: Introduce readdirplus test case for

fuse bpf

Readdir plus is potentially dangerous place because
this leads us to allocate fuse inodes. If we have
problems with inode allocation and discovery we may
end up with inode conflict which may cause backing_fd
losing.

We currently have this problem and this test clearly
reproduce it.

More information about the problem:
go/fuse-loosing-inode-with-backing

Fixes for this problem:
https://android-review.googlesource.com/c/kernel/common/+/2135866
https://android-review.googlesource.com/c/kernel/common/+/2135457



Bug: 219958836
Test: Currently it’s fairly failed, after applying patches from
above it passed.
Co-developed-by: Paul Lawrence <paullawrence@google.com>

Change-Id: I8afb535605faffc9facf626d0c7d0f244dc8d28e
Signed-off-by: Dmitrii Merkurev <dimorinny@google.com>