// file descriptor so we limit this to less than the number of
// permitted open files. On some systems, notably Darwin, if
// getaddrinfo is unable to open a file descriptor it simply returns
// EAI_NONAME rather than a useful error. Limiting the number of
// concurrent getaddrinfo calls to less than the permitted number of
// file descriptors makes that error less likely. We don't bother to

	Addrlen   uint32
	Canonname *byte
	Addr      *syscall.RawSockaddr
	Next      *Addrinfo
}

//go:cgo_ldflag "-lresolv"

//go:cgo_import_dynamic libc_getaddrinfo getaddrinfo "/usr/lib/libSystem.B.dylib"
func libc_getaddrinfo_trampoline()

func Getaddrinfo(hostname, servname *byte, hints *Addrinfo, res **Addrinfo) (int, error) {
	gerrno, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_getaddrinfo_trampoline),

// arguments for and against including AI_ADDRCONFIG
// in the flags (it includes IPv4 results only on IPv4 systems,
// and similarly for IPv6), but in practice setting it causes
// getaddrinfo to return the wrong canonical name on Linux.
// So definitely leave it out.

}

func _C_gai_strerror(eai _C_int) string {
	return unix.GaiStrerror(int(eai))
}

func _C_getaddrinfo(hostname, servname *byte, hints *_C_struct_addrinfo, res **_C_struct_addrinfo) (int, error) {
	return unix.Getaddrinfo(hostname, servname, hints, res)
}

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

func _C_gai_strerror(eai _C_int) string {
	return C.GoString(C.gai_strerror(eai))
}

func _C_getaddrinfo(hostname, servname *_C_char, hints *_C_struct_addrinfo, res **_C_struct_addrinfo) (int, error) {
	x, err := C.getaddrinfo(hostname, servname, hints, res)
	return int(x), err