kernel/tools/testing/selftests/openat2/openat2_test.c, branch linux-6.2.y

selftests: openat2: Skip testcases that fail with EOPNOTSUPP

2022-01-27T23:31:07Z

Skip testcases that fail since the requested valid flags combination is not supported by the underlying filesystem. Cc: Aleksa Sarai Signed-off-by: Cristian Marussi Signed-off-by: Shuah Khan

selftests: openat2: Fix testing failure for O_LARGEFILE flag

2021-08-25T19:46:13Z

The openat2 test suite fails on ARM64 because the definition of O_LARGEFILE is different on ARM64. Fix the problem by defining the correct O_LARGEFILE definition on ARM64. "openat2 unexpectedly returned # 3['.../tools/testing/selftests/openat2'] with 208000 (!= 208000) not ok 102 openat2 with incompatible flags (O_PATH | O_LARGEFILE) fails with -22 (Invalid argument)" Fixed change log to improve formatting and clarity: Shuah Khan Signed-off-by: Baolin Wang Reviewed-by: Aleksa Sarai Acked-by: Christian Brauner Signed-off-by: Shuah Khan

test: add openat2() test for invalid upper 32 bit flag value

2021-05-28T15:44:37Z

Test that openat2() rejects unknown flags in the upper 32 bit range. Link: https://lore.kernel.org/r/20210528092417.3942079-4-brauner@kernel.org Cc: Richard Guy Briggs Cc: Aleksa Sarai Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Richard Guy Briggs Signed-off-by: Christian Brauner

selftests: openat2: add RESOLVE_ conflict test

2020-12-03T09:16:28Z

Now that we reject conflicting RESOLVE_ flags, add a selftest to avoid regressions. Signed-off-by: Aleksa Sarai Link: https://lore.kernel.org/r/20201027235044.5240-3-cyphar@cyphar.com Signed-off-by: Christian Brauner

selftests: add openat2(2) selftests

2020-01-18T14:19:18Z

Test all of the various openat2(2) flags. A small stress-test of a symlink-rename attack is included to show that the protections against ".."-based attacks are sufficient. The main things these self-tests are enforcing are: * The struct+usize ABI for openat2(2) and copy_struct_from_user() to ensure that upgrades will be handled gracefully (in addition, ensuring that misaligned structures are also handled correctly). * The -EINVAL checks for openat2(2) are all correctly handled to avoid userspace passing unknown or conflicting flag sets (most importantly, ensuring that invalid flag combinations are checked). * All of the RESOLVE_* semantics (including errno values) are correctly handled with various combinations of paths and flags. * RESOLVE_IN_ROOT correctly protects against the symlink rename(2) attack that has been responsible for several CVEs (and likely will be responsible for several more). Cc: Shuah Khan Signed-off-by: Aleksa Sarai Signed-off-by: Al Viro