erofs-freebsd-out-tree/tests/TC066-vop-bmap-unsupported.md

Test Case: Unsupported BMAP with Pager Fallback

Test ID: TC066-vop-bmap-unsupported Category: VM Integration Priority: High

Objective

Verify the exact source KLD keeps erofs_bmap as EOPNOTSUPP while FreeBSD's local vnode pager successfully faults plain and compressed files through VOP_READ.

Procedure

Audit the exact archived source registration and record KLD symbols. Then, on fresh mounts of vfs/vfs-plain.erofs and vfs/vfs-lz4.erofs, run:

./mmap_fault /tmp/repo22-g3/mnt/pager.bin

Expected Results

The source returns EOPNOTSUPP from erofs_bmap and registers both local pager entry points. Both real mmap tests pass; dmesg has no "No strategy for buffer", assertion, trap, or panic. Record source/KLD/image hashes and cleanup.