37 lines
857 B
Go
37 lines
857 B
Go
|
// Copyright 2015 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
// +build cgo,!netgo
|
||
|
|
// +build android freebsd dragonfly openbsd
|
||
|
|
|
||
|
|
package net
|
||
|
|
|
||
|
|
/*
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/socket.h>
|
||
|
|
|
||
|
|
#include <netdb.h>
|
||
|
|
*/
|
||
|
|
|
||
|
|
import (
|
||
|
|
"syscall"
|
||
|
|
)
|
||
|
|
|
||
|
|
//extern getnameinfo
|
||
|
|
func libc_getnameinfo(*syscall.RawSockaddr, syscall.Socklen_t, *byte, syscall.Size_t, *byte, syscall.Size_t, int) int
|
||
|
|
|
||
|
|
func cgoNameinfoPTR(b []byte, sa *syscall.RawSockaddr, salen syscall.Socklen_t) (int, error) {
|
||
|
|
syscall.Entersyscall()
|
||
|
|
gerrno := libc_getnameinfo(sa, salen, &b[0], syscall.Size(len(b)), nil, 0, syscall.NI_NAMEREQD)
|
||
|
|
syscall.Exitsyscall()
|
||
|
|
var err error
|
||
|
|
if gerrno == syscall.EAI_SYSTEM {
|
||
|
|
errno := syscall.GetErrno()
|
||
|
|
if errno != 0 {
|
||
|
|
err = errno
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return gerrno, err
|
||
|
|
}
|