selftests/bpf: add file dynptr tests

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Introducing selftests for validating file-backed dynptr works as
expected.
 * validate implementation supports dynptr slice and read operations
 * validate destructors should be paired with initializers
 * validate sleepable progs can page in.

Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Reviewed-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20251026203853.135105-11-mykyta.yatsenko5@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Mykyta Yatsenko 2025-10-26 20:38:53 +00:00 • committed by Alexei Starovoitov

parent 2c52e8943a

commit 784cdf9315

3 changed files with 310 additions and 0 deletions

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113

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

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145

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

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52

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

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