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// Copyright 2014 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.
package os
import "syscall"
// supportsCloseOnExec reports whether the platform supports the
// O_CLOEXEC flag.
var supportsCloseOnExec bool
func init() {
// Seems like kern.osreldate is veiled on latest OS X. We use
// kern.osrelease instead.
osver, err := syscall.Sysctl("kern.osrelease")
if err != nil {
return
}
var i int
for i = range osver {
if osver[i] != '.' {
continue
}
}
// The O_CLOEXEC flag was introduced in OS X 10.7 (Darwin
// 11.0.0). See http://support.apple.com/kb/HT1633.
if i > 2 || i == 2 && osver[0] >= '1' && osver[1] >= '1' {
supportsCloseOnExec = true
}
}
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