forked from TrueCloudLab/restic
39 lines
812 B
Go
39 lines
812 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 "unsafe"
|
|
|
|
var (
|
|
nativeEndian binaryByteOrder
|
|
kernelAlign int
|
|
wireFormats map[int]*wireFormat
|
|
)
|
|
|
|
func init() {
|
|
i := uint32(1)
|
|
b := (*[4]byte)(unsafe.Pointer(&i))
|
|
if b[0] == 1 {
|
|
nativeEndian = littleEndian
|
|
} else {
|
|
nativeEndian = bigEndian
|
|
}
|
|
kernelAlign, wireFormats = probeRoutingStack()
|
|
}
|
|
|
|
func roundup(l int) int {
|
|
if l == 0 {
|
|
return kernelAlign
|
|
}
|
|
return (l + kernelAlign - 1) & ^(kernelAlign - 1)
|
|
}
|
|
|
|
type wireFormat struct {
|
|
extOff int // offset of header extension
|
|
bodyOff int // offset of message body
|
|
parse func(RIBType, []byte) (Message, error)
|
|
}
|