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libbpf: Add API to get/set log_level at per-program level

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Add bpf_program__set_log_level() and bpf_program__log_level() to fetch
and adjust log_level sent during BPF_PROG_LOAD command. This allows to
selectively request more or less verbose output in BPF verifier log.

Also bump libbpf version to 0.7 and make these APIs the first in v0.7.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211201232824.3166325-3-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko
2021-12-01 15:28:17 -08:00
committed by Andrii Nakryiko
parent ac1c007607
commit d761220e33
4 changed files with 23 additions and 1 deletions
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src/libbpf.h
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@@ -499,6 +499,8 @@ bpf_program__set_expected_attach_type(struct bpf_program *prog,
LIBBPF_API __u32 bpf_program__flags(const struct bpf_program *prog);
LIBBPF_API int bpf_program__set_flags(struct bpf_program *prog, __u32 flags);
LIBBPF_API __u32 bpf_program__log_level(const struct bpf_program *prog);
LIBBPF_API int bpf_program__set_log_level(struct bpf_program *prog, __u32 log_level);
LIBBPF_API int
bpf_program__set_attach_target(struct bpf_program *prog, int attach_prog_fd,