Function structOpsPopulateValue

struct_ops.go:121–138

structOpsPopulateValue writes a `prog FD` which references to `p` into the struct_ops value buffer `kernVData` at byte offset `dstOff` corresponding to the member `km`.

(km btf.Member, kernVData []byte, p *Program)

// struct_ops value buffer `kernVData` at byte offset `dstOff` corresponding to
// the member `km`.
func structOpsPopulateValue(km btf.Member, kernVData []byte, p *Program) error {
	if err := structOpsFuncPtrMember(km); err != nil {
		return err
	}

	layout, err := newStructOpsMemberLayout(km)
	if err != nil {
		return err
	}

	dst, err := layout.bytes(kernVData)
	if err != nil || len(dst) != 8 {
		return fmt.Errorf("member %q: value buffer too small for func ptr", km.Name)
	}

	internal.NativeEndian.PutUint64(dst, uint64(p.FD()))
	return nil
}

// structOpsValidateMemberPair checks whether `m` can be copied into `km`.
func structOpsValidateMemberPair(m, km btf.Member) (int, error) {