#include <resolv.h>

#cgo !android,!openbsd LDFLAGS: -lresolv
*/
import "C"

type _C_struct___res_state = struct{}

func _C_res_ninit(state *_C_struct___res_state) error {
	return nil
}

func _C_res_nclose(state *_C_struct___res_state) {
	return
}

func _C_res_nsearch(state *_C_struct___res_state, dname *_C_char, class, typ int, ans *_C_uchar, anslen int) int {

*/
import "C"

type _C_struct___res_state = C.struct___res_state

func _C_res_ninit(state *_C_struct___res_state) error {
	_, err := C.res_ninit(state)
	return err
}

func _C_res_nclose(state *_C_struct___res_state) {
	C.res_nclose(state)
}

func _C_res_nsearch(state *_C_struct___res_state, dname *_C_char, class, typ int, ans *_C_uchar, anslen int) int {

	return nil
}

func _C_res_nsearch(state *_C_struct___res_state, dname *_C_char, class, typ int, ans *_C_char, anslen int) int {
	x, _ := unix.ResNsearch(state, dname, class, typ, ans, anslen)
	return x
}

func _C_res_nclose(state *_C_struct___res_state) {
	unix.ResNclose(state)
}

func cgoNameinfoPTR(b []byte, sa *syscall.RawSockaddr, salen int) (int, error) {

		clear(memSlice)
		state = (*_C_struct___res_state)(unsafe.Pointer(&memSlice[0]))
	}
	if err := _C_res_ninit(state); err != nil {
		return nil, errors.New("res_ninit failure: " + err.Error())
	}
	defer _C_res_nclose(state)

	// Some res_nsearch implementations (like macOS) do not set errno.
	// They set h_errno, which is not per-thread and useless to us.
	// res_nsearch returns the size of the DNS response packet.