Function structOpsFindInnerType

struct_ops.go:84–94

structOpsFindInnerType returns the "inner" struct inside a value struct_ops type. Given a value like: struct bpf_struct_ops_bpf_testmod_ops { struct bpf_struct_ops_common common; struct bpf_testmod_ops data; }; this function returns the *btf.Struct for "bpf_testmod_ops" along with the

(vType *btf.Struct)

// The inner struct name is derived by trimming the "bpf_struct_ops_" prefix
// from the value's name.
func structOpsFindInnerType(vType *btf.Struct) (*btf.Struct, uint32, error) {
	innerName := strings.TrimPrefix(vType.Name, structOpsValuePrefix)

	for _, m := range vType.Members {
		if st, ok := btf.As[*btf.Struct](m.Type); ok && st.Name == innerName {
			return st, m.Offset.Bytes(), nil
		}
	}

	return nil, 0, fmt.Errorf("inner struct %q not found in %s", innerName, vType.Name)
}

// structOpsFindTarget resolves the kernel-side "value struct" for a struct_ops map.
func structOpsFindTarget(userType *btf.Struct, cache *btf.Cache) (vType *btf.Struct, id btf.TypeID, module *btf.Handle, err error) {