Source file src/net/sys_cloexec.go

     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 and accept for platforms that do not
     6	// provide a fast path for setting SetNonblock and CloseOnExec.
     7	
     8	// +build aix darwin nacl solaris
     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	

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