kernel/linux.git/tools/testing/selftests/openat2/openat2_test.c, branch v6.19.5

selftests: complete kselftest include centralization

2025-11-27T22:24:31+00:00

This follow-up patch completes centralization of kselftest.h and ksefltest_harness.h includes in remaining seltests files, replacing all relative paths with a non-relative paths using shared -I include path in lib.mk Tested with gcc-13.3 and clang-18.1, and cross-compiled successfully on riscv, arm64, x86_64 and powerpc arch. [reddybalavignesh9979@gmail.com: add selftests include path for kselftest.h] Link: https://lkml.kernel.org/r/20251017090201.317521-1-reddybalavignesh9979@gmail.com Link: https://lkml.kernel.org/r/20251016104409.68985-1-reddybalavignesh9979@gmail.com Signed-off-by: Bala-Vignesh-Reddy Suggested-by: Andrew Morton Link: https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-foundation.org/ Reviewed-by: Wei Yang Cc: David Hildenbrand Cc: David S. Miller Cc: Eric Dumazet Cc: Günther Noack Cc: Jakub Kacinski Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mickael Salaun Cc: Ming Lei Cc: Paolo Abeni Cc: Shuah Khan Cc: Simon Horman Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton

selftests/openat2: Fix build warnings on ppc64

2024-05-29T18:26:11+00:00

Fix warnings like: openat2_test.c: In function ‘test_openat2_flags’: openat2_test.c:303:73: warning: format ‘%llX’ expects argument of type ‘long long unsigned int’, but argument 5 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=] By switching to unsigned long long for u64 for ppc64 builds. Signed-off-by: Michael Ellerman Reviewed-by: Muhammad Usama Anjum Signed-off-by: Shuah Khan

selftests/openat2: Fix wrong format specifier

2023-10-13T20:08:16+00:00

Compiling openat2 selftest after adding a __printf() attribute to ksft_print_msg() exposes a -Wformat warning in test_openat2_flags(). The wrong format specifier is used for printing test.how->flags variable. Change the format specifier to %llX so it matches the printed variable. Signed-off-by: Maciej Wieczor-Retman Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan

selftests: openat2: Skip testcases that fail with EOPNOTSUPP

2022-01-27T23:31:07+00:00

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

2021-08-25T19:46:13+00:00

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

2021-05-28T15:44:37+00:00

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

2020-12-03T09:16:28+00:00

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

2020-01-18T14:19:18+00:00

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