1 // Copyright 2013 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4 5 // This file implements sysSocket for platforms that do not provide a fast path
6 // for setting SetNonblock and CloseOnExec.
7 8 //go:build aix || darwin
9 10 package net
11 12 import (
13 "internal/poll"
14 "os"
15 "syscall"
16 )
17 18 // Wrapper around the socket system call that marks the returned file
19 // descriptor as nonblocking and close-on-exec.
20 func sysSocket(family, sotype, proto int) (int, error) {
21 // See ../syscall/exec_unix.go for description of ForkLock.
22 syscall.ForkLock.RLock()
23 s, err := socketFunc(family, sotype, proto)
24 if err == nil {
25 syscall.CloseOnExec(s)
26 }
27 syscall.ForkLock.RUnlock()
28 if err != nil {
29 return -1, os.NewSyscallError("socket", err)
30 }
31 if err = syscall.SetNonblock(s, true); err != nil {
32 poll.CloseFunc(s)
33 return -1, os.NewSyscallError("setnonblock", err)
34 }
35 return s, nil
36 }
37