Currently the vDSO selftests use the time-related types from libc. This works on glibc by chance today but will break with other libc implementations or on distributions which switch to 64-bit times everywhere.
The kernel's UAPI headers provide the proper types to use with the vDSO (and raw syscalls) but are not necessarily compatible with libc types. Introduce a new header which makes the UAPI headers compatible with the libc. Also contains some related cleanups. Signed-off-by: Thomas Weißschuh <[email protected]> --- Changes in v2: - Use __kernel_old_time_t in vdso_time_t. - Add vdso_syscalls.h. - Add a test for the time() function. - Validate return value of syscall(clock_getres) in vdso_test_abi - Link to v1: https://lore.kernel.org/r/[email protected] --- Thomas Weißschuh (14): Revert "selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers" selftests: vDSO: Introduce vdso_types.h selftests: vDSO: Introduce vdso_syscalls.h selftests: vDSO: vdso_test_gettimeofday: Remove nolibc checks selftests: vDSO: vdso_test_gettimeofday: Use types from vdso_types.h selftests: vDSO: vdso_test_abi: Use types from vdso_types.h selftests: vDSO: vdso_test_abi: Validate return value of syscall(clock_getres) selftests: vDSO: vdso_test_abi: Use system call wrappers from vdso_syscalls.h selftests: vDSO: vdso_test_correctness: Drop SYS_getcpu fallbacks selftests: vDSO: vdso_test_correctness: Make ts_leq() and tv_leq() more generic selftests: vDSO: vdso_test_correctness: Use types from vdso_types.h selftests: vDSO: vdso_test_correctness: Use system call wrappers from vdso_syscalls.h selftests: vDSO: vdso_test_correctness: Use facilities from parse_vdso.c selftests: vDSO: vdso_test_correctness: Add a test for time() tools/testing/selftests/vDSO/Makefile | 6 +- tools/testing/selftests/vDSO/parse_vdso.c | 3 +- tools/testing/selftests/vDSO/vdso_syscalls.h | 93 ++++++++++ tools/testing/selftests/vDSO/vdso_test_abi.c | 46 +++-- .../testing/selftests/vDSO/vdso_test_correctness.c | 190 +++++++++++---------- .../selftests/vDSO/vdso_test_gettimeofday.c | 9 +- tools/testing/selftests/vDSO/vdso_types.h | 70 ++++++++ 7 files changed, 285 insertions(+), 132 deletions(-) --- base-commit: 1b2eb8c1324859864f4aa79dc3cfbb2f7ef5c524 change-id: 20251110-vdso-test-types-68ce0c712b79 Best regards, -- Thomas Weißschuh <[email protected]>
