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| author | Kui-Feng Lee <thinker.li@gmail.com> | 2024-03-13 14:41:37 -0700 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2024-03-14 13:47:05 -0700 |
| commit | c911fc61a7ce367f9ea48e457f31bb171e80ca4d (patch) | |
| tree | 80958ee01093375725f14731119423303eee93b0 /tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c | |
| parent | libbpf: Prevent null-pointer dereference when prog to load has no BTF (diff) | |
| download | linux-c911fc61a7ce367f9ea48e457f31bb171e80ca4d.tar.gz linux-c911fc61a7ce367f9ea48e457f31bb171e80ca4d.zip | |
libbpf: Skip zeroed or null fields if not found in the kernel type.
Accept additional fields of a struct_ops type with all zero values even if
these fields are not in the corresponding type in the kernel. This provides
a way to be backward compatible. User space programs can use the same map
on a machine running an old kernel by clearing fields that do not exist in
the kernel.
Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240313214139.685112-2-thinker.li@gmail.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c')
0 files changed, 0 insertions, 0 deletions