Alexei Starovoitov wrote: > From: Alexei Starovoitov <ast@xxxxxxxxxx> > > 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@xxxxxxxxxx> > --- 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? A use-case I'm trying to fit into this series is how to pass down a BTF fd/object with the program. I know its not doing CO-RE yet but we would want it to use the BTF object being passed down for CO-RE eventually. Will there be someway to do that here? That looks like the btf_fd here. Thanks, John
