selftests/bpf: Add tests for bpf_cgroup_read_xattr

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Add tests for different scenarios with bpf_cgroup_read_xattr:
1. Read cgroup xattr from bpf_cgroup_from_id;
2. Read cgroup xattr from bpf_cgroup_ancestor;
3. Read cgroup xattr from css_iter;
4. Use bpf_cgroup_read_xattr in LSM hook security_socket_connect.
5. Use bpf_cgroup_read_xattr in cgroup program.

Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/20250623063854.1896364-5-song@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Song Liu 2025-06-22 23:38:54 -07:00 • committed by Christian Brauner

parent 1504d8c7c7

commit f4fba2d6d2

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3

tools/testing/selftests/bpf/bpf_experimental.h

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145

tools/testing/selftests/bpf/prog_tests/cgroup_xattr.c

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tools/testing/selftests/bpf/progs/cgroup_read_xattr.c

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tools/testing/selftests/bpf/progs/read_cgroupfs_xattr.c

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