[PATCH v13 0/5] 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.

--
v13:
- Fix quoting of $MOUNT_OPTION in -z check
- Stash $MOUNT_OPTION export for btrfs in _require_scratch_verity
- Change pointless '<f grep foo' to 'grep foo f' in generic/574
- Refactor logwrites orphan test to use logwrites fua hunting functions.
  It ran in 6 seconds instead of ~30 on my machine, and I was able to
  verify that it still hit all the interesting cases.
- Add recoveryloop group to orphan test
- Get rid of overly pessimistic "UNKNOWN.3[67]" from verity item grep,
  rely on a new version of progs (needed for corruption functions and
  COMPAT_RO flags anyway...)
v12:
- Actually incorporate Sweet Tea's significant improvement to the commit
  message for the log-writes test.
v11:
- remove unneeded common/btrfs sourcing from common/verity
- fix btrfs/290 prealloc test in case the disk extent actually
  had zeros.
- make logic a little more consistent in btrfs/291
- make btrfs/291 work regardless of how btrfs-progs prints the Merkle
  items.
v10:
- rebase
- add nodatasum instead of setting it
- rewrite eof block test to read zap_len at eof and to compare with a
  zero file instead of using xxd
- add _require_loop to the log_writes test

v9:
- use nodatasum for btrfs corruption tests.
- modify eof block corruption test to allow all zeroes rather than
  requiring an error.
v8:
- reorganize to have a patch for enabling generic tests followed by the
  patches with new and specific tests.
- fix some rebasing miscues from v7.
- fix a chunk of space characters instead of a tab in the new requires
  function.
v7:
- add a new patch to make the new corruption requires more clear
- require corruption in generic/576
- require only btrfs_corrupt_block in btrfs/290
- add missing xfs_io requirements in btrfs/290
- remove unneeded zero byte check from btrfs corruption function
- fix sloppy extras in generic/690
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 (5):
  common/verity: require corruption functionality
  common/verity: support btrfs in generic fsverity tests
  btrfs: test btrfs specific fsverity corruption
  btrfs: test verity orphans with dmlogwrites
  generic: test fs-verity EFBIG scenarios

 common/btrfs          |   5 ++
 common/config         |   1 +
 common/verity         |  48 ++++++++++++
 tests/btrfs/290       | 172 ++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/290.out   |  25 ++++++
 tests/btrfs/291       | 168 +++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/291.out   |   2 +
 tests/generic/574     |  38 +++++++++-
 tests/generic/574.out |  13 +---
 tests/generic/576     |   1 +
 tests/generic/692     |  64 ++++++++++++++++
 tests/generic/692.out |   7 ++
 12 files changed, 532 insertions(+), 12 deletions(-)
 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 100644 tests/generic/692
 create mode 100644 tests/generic/692.out

-- 
2.37.1