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1306c980cf
Add re-usable btf_helpers.{c,h} to provide BTF-related testing routines. Start
with adding a raw BTF dumping helpers.
Raw BTF dump is the most succinct and at the same time a very human-friendly
way to validate exact contents of BTF types. Cross-validate raw BTF dump and
writable BTF in a single selftest. Raw type dump checks also serve as a good
self-documentation.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20201105043402.2530976-7-andrii@kernel.org
12 lines
308 B
C
12 lines
308 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2020 Facebook */
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#ifndef __BTF_HELPERS_H
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#define __BTF_HELPERS_H
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#include <stdio.h>
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#include <bpf/btf.h>
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int fprintf_btf_type_raw(FILE *out, const struct btf *btf, __u32 id);
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const char *btf_type_raw_dump(const struct btf *btf, int type_id);
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#endif
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