John Fastabend wrote:

Alexei Starovoitov wrote:

quoted

From: Alexei Starovoitov <ast@kernel.org>

Add new helper:

long bpf_btf_find_by_name_kind(u32 btf_fd, char *name, u32 kind, int flags)
	Description
		Find given name with given type in BTF pointed to by btf_fd.
		If btf_fd is zero look for the name in vmlinux BTF and in module's BTFs.
	Return
		Returns btf_id and btf_obj_fd in lower and upper 32 bits.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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I'm missing some high-level concept on how this would be used? Where does btf_fd come
from and how is it used so that it doesn't break sig-check?

aha as I look through this again it seems btf_fd can be from fd_array[] and
sig-check will pan out as well as BTF can come from any valid file.

Correct? If so lgtm at high-level.