github.com/robhaswell/grandperspective-scan@v0.1.0/test/go-go1.7.1/src/os/sys_freebsd.go (about)

     1  // Copyright 2014 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  package os
     6  
     7  import "syscall"
     8  
     9  // supportsCloseOnExec reports whether the platform supports the
    10  // O_CLOEXEC flag.
    11  var supportsCloseOnExec bool
    12  
    13  func init() {
    14  	osrel, err := syscall.SysctlUint32("kern.osreldate")
    15  	if err != nil {
    16  		return
    17  	}
    18  	// The O_CLOEXEC flag was introduced in FreeBSD 8.3.
    19  	// See http://www.freebsd.org/doc/en/books/porters-handbook/freebsd-versions.html.
    20  	if osrel >= 803000 {
    21  		supportsCloseOnExec = true
    22  	}
    23  }