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libbpf: Add ability to get/set per-program load flags

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Add bpf_program__flags() API to retrieve prog_flags that will be (or
were) supplied to BPF_PROG_LOAD command.

Also add bpf_program__set_extra_flags() API to allow to set *extra*
flags, in addition to those determined by program's SEC() definition.
Such flags are logically OR'ed with libbpf-derived flags.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211111051758.92283-2-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko
2021-11-10 21:17:57 -08:00
committed by Andrii Nakryiko
parent 932800b20b
commit 0e80b7dc3f
3 changed files with 19 additions and 0 deletions
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src/libbpf.map
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@@ -397,8 +397,10 @@ LIBBPF_0.6.0 {
bpf_object__prev_program;
bpf_prog_load_deprecated;
bpf_prog_load;
bpf_program__flags;
bpf_program__insn_cnt;
bpf_program__insns;
bpf_program__set_extra_flags;
btf__add_btf;
btf__add_decl_tag;
btf__raw_data;