Add tests for fs-verity. fs-verity is an ext4 and f2fs filesystem feature which provides Merkle tree based hashing (similar to dm-verity) for individual read-only files, mainly for the purpose of efficient authenticity verification. Other filesystems may add fs-verity support later, using the same API. Running these tests requires: - Kernel v5.4-rc1 or later configured with CONFIG_FS_VERITY=y, and optionally CONFIG_FS_ENCRYPTION=y (for generic/904), CONFIG_FS_VERITY_BUILTIN_SIGNATURES=y (for generic/905), and CONFIG_CRYPTO_SHA512=y (for generic/903 to cover SHA-512). - The 'fsverity' utility program from https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/fsverity-utils.git - e2fsprogs v1.45.2 or later for ext4 tests, or f2fs-tools v1.11.0 or later for f2fs tests - generic/905 also requires the 'openssl' program. Example with kvm-xfstests: $ kvm-xfstests -c ext4,f2fs -g verity For more information about fs-verity, see https://www.kernel.org/doc/html/latest/filesystems/fsverity.html This patchset can also be retrieved from tag "fsverity_2019-09-30" of https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/xfstests-dev.git Note: my other pending xfstests patchset "xfstests: add tests for fscrypt key management improvements" renames the function _generate_encryption_key(), which is used by generic/904 in this patchset. This will need to be fixed up when the second of these two patchsets is merged. Changed since v3: - Update generic/900 to also test executing FS_IOC_ENABLE_VERITY while another process is already executing it on the same file. Changed since v2: - Updated the signature verification test (generic/905) to match the latest kernel and fsverity-utils changes. - Added _fsv_sign() utility function. - Correctly skip the fs-verity tests on ext3-style filesystems. Changed since v1: - Updated all tests to use the new fs-verity kernel API. - Many cleanups, additional checks in the tests, and other improvements. - Addressed review comments from Eryu Guan. - Added a test for the built-in signature verification feature. - Removed the fs-verity descriptor validation test, since the on-disk format of this part was greatly simplified and made fs-specific. Eric Biggers (8): common/filter: add _filter_xfs_io_fiemap() common/verity: add common functions for testing fs-verity generic: test general behavior of verity files generic: test access controls on the fs-verity ioctls generic: test corrupting verity files generic: test that fs-verity is using the correct measurement values generic: test using fs-verity and fscrypt simultaneously generic: test the fs-verity built-in signature verification support common/config | 2 + common/filter | 24 +++++ common/verity | 215 ++++++++++++++++++++++++++++++++++++++++++ tests/generic/900 | 199 ++++++++++++++++++++++++++++++++++++++ tests/generic/900.out | 74 +++++++++++++++ tests/generic/901 | 73 ++++++++++++++ tests/generic/901.out | 14 +++ tests/generic/902 | 154 ++++++++++++++++++++++++++++++ tests/generic/902.out | 91 ++++++++++++++++++ tests/generic/903 | 112 ++++++++++++++++++++++ tests/generic/903.out | 5 + tests/generic/904 | 80 ++++++++++++++++ tests/generic/904.out | 12 +++ tests/generic/905 | 150 +++++++++++++++++++++++++++++ tests/generic/905.out | 42 +++++++++ tests/generic/group | 6 ++ 16 files changed, 1253 insertions(+) create mode 100644 common/verity create mode 100755 tests/generic/900 create mode 100644 tests/generic/900.out create mode 100755 tests/generic/901 create mode 100644 tests/generic/901.out create mode 100755 tests/generic/902 create mode 100644 tests/generic/902.out create mode 100755 tests/generic/903 create mode 100644 tests/generic/903.out create mode 100755 tests/generic/904 create mode 100644 tests/generic/904.out create mode 100755 tests/generic/905 create mode 100644 tests/generic/905.out -- 2.23.0.444.g18eeb5a265-goog
