bpf: Add bpf_btf_find_by_name_kind() helper.

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Add new helper:
long bpf_btf_find_by_name_kind(char *name, int name_sz, u32 kind, int flags)
Description
	Find BTF type with given name and kind in vmlinux BTF or in module's BTFs.
Return
	Returns btf_id and btf_obj_fd in lower and upper 32 bits.

It will be used by loader program to find btf_id to attach the program to
and to find btf_ids of ksyms.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210514003623.28033-10-alexei.starovoitov@gmail.com

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Alexei Starovoitov 2021-05-13 17:36:11 -07:00 • committed by Daniel Borkmann

parent 387544bfa2

commit 3d78417b60

5 changed files with 79 additions and 0 deletions

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1

include/linux/bpf.h

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7

include/uapi/linux/bpf.h

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62

kernel/bpf/btf.c

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2

kernel/bpf/syscall.c

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7

tools/include/uapi/linux/bpf.h

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