libbpf: Expose BTF-to-C type declaration emitting API

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Expose API that allows to emit type declaration and field/variable definition
(if optional field name is specified) in valid C syntax for any provided BTF
type. This is going to be used by bpftool when emitting data section layout as
a struct. As part of making this API useful in a stand-alone fashion, move
initialization of some of the internal btf_dump state to earlier phase.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20191214014341.3442258-8-andriin@fb.com

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Andrii Nakryiko 2019-12-13 17:43:31 -08:00 • committed by Alexei Starovoitov

parent 3d208f4ca1

commit 9f81654eeb

3 changed files with 65 additions and 26 deletions

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22

tools/lib/bpf/btf.h

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68

tools/lib/bpf/btf_dump.c

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1

tools/lib/bpf/libbpf.map

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