28 lines
729 B
Go
28 lines
729 B
Go
// Copyright 2016 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 darwin dragonfly freebsd netbsd openbsd
|
|
|
|
package route
|
|
|
|
import (
|
|
"syscall"
|
|
"unsafe"
|
|
)
|
|
|
|
var zero uintptr
|
|
|
|
func sysctl(mib []int32, old *byte, oldlen *uintptr, new *byte, newlen uintptr) error {
|
|
var p unsafe.Pointer
|
|
if len(mib) > 0 {
|
|
p = unsafe.Pointer(&mib[0])
|
|
} else {
|
|
p = unsafe.Pointer(&zero)
|
|
}
|
|
_, _, errno := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(p), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
|
|
if errno != 0 {
|
|
return error(errno)
|
|
}
|
|
return nil
|
|
}
|