[PATCH v6 0/4] tests for btrfs fsverity

[Boris Burkov <boris@bur.io>]

This patchset provides tests for fsverity support in btrfs.

It includes modifications for generic tests to pass with btrfs as well
as new tests.

--
v6:
- refactor "requires" for verity corruption tests so that other verity
  tests can run on btrfs even without the corruption command available.
  Also, explictly require xfs_io fiemap for all corruption tests.
- simplify and clarify "non-trivial EFBIG" calculation and documentation
  per suggestions by Eric Biggers.
- remove unnecessary adjustment to max file size in the new EFBIG test;
  the bug it worked around has been fixed.
v5:
- more idiomatic requires structure for making efbig test generic
- make efbig test use truncate instead of pwrite for making a big file
- improve documentation for efbig test approximation
- fix underscores vs dashes in btrfs_requires_corrupt_block
- improvements in missing/redundant requires invocations
- move orphan test image file to $TEST_DIR
- make orphan test replay/snapshot device size depend on log device
  instead of hard-coding it.
- rebase (signicant: no more "groups" file; use preamble)
v4:
- mark local variables
- get rid of redundant mounts and syncs
- use '_' in function names correctly
- add a test for the EFBIG case
- reduce usage of requires_btrfs_corrupt_block
- handle variable input when corrupting merkle tree
v3: rebase onto xfstests master branch
v2: pass generic tests, add logwrites test


Boris Burkov (4):
  btrfs: test btrfs specific fsverity corruption
  generic/574: corrupt btrfs merkle tree data
  btrfs: test verity orphans with dmlogwrites
  generic: test fs-verity EFBIG scenarios

 common/btrfs          |   5 ++
 common/config         |   1 +
 common/verity         |  43 +++++++++++
 tests/btrfs/290       | 166 ++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/290.out   |  25 +++++++
 tests/btrfs/291       | 161 ++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/291.out   |   2 +
 tests/generic/574     |   1 +
 tests/generic/690     |  66 +++++++++++++++++
 tests/generic/690.out |   7 ++
 10 files changed, 477 insertions(+)
 create mode 100755 tests/btrfs/290
 create mode 100644 tests/btrfs/290.out
 create mode 100755 tests/btrfs/291
 create mode 100644 tests/btrfs/291.out
 create mode 100755 tests/generic/690
 create mode 100644 tests/generic/690.out

-- 
2.34.0