bpf: btf: Add struct bpf_btf_info

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During BPF_OBJ_GET_INFO_BY_FD on a btf_fd, the current bpf_attr's
info.info is directly filled with the BTF binary data.  It is
not extensible.  In this case, we want to add BTF ID.

This patch adds "struct bpf_btf_info" which has the BTF ID as
one of its member.  The BTF binary data itself is exposed through
the "btf" and "btf_size" members.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Martin KaFai Lau 2018-05-04 14:49:52 -07:00 • committed by Daniel Borkmann

parent 78958fca7e

commit 62dab84c81

3 changed files with 43 additions and 6 deletions

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6

include/uapi/linux/bpf.h

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26

kernel/bpf/btf.c

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17

kernel/bpf/syscall.c

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