mirror of
https://github.com/Luzifer/ansible-role-version.git
synced 2024-12-23 19:11:20 +00:00
76 lines
1.8 KiB
Go
76 lines
1.8 KiB
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
|
||
|
|
|
||
|
|
package route
|
||
|
|
|
||
|
|
import (
|
||
|
|
"runtime"
|
||
|
|
"syscall"
|
||
|
|
)
|
||
|
|
|
||
|
|
func (m *RouteMessage) marshal() ([]byte, error) {
|
||
|
|
w, ok := wireFormats[m.Type]
|
||
|
|
if !ok {
|
||
|
|
return nil, errUnsupportedMessage
|
||
|
|
}
|
||
|
|
l := w.bodyOff + addrsSpace(m.Addrs)
|
||
|
|
if runtime.GOOS == "darwin" {
|
||
|
|
// Fix stray pointer writes on macOS.
|
||
|
|
// See golang.org/issue/22456.
|
||
|
|
l += 1024
|
||
|
|
}
|
||
|
|
b := make([]byte, l)
|
||
|
|
nativeEndian.PutUint16(b[:2], uint16(l))
|
||
|
|
if m.Version == 0 {
|
||
|
|
b[2] = sysRTM_VERSION
|
||
|
|
} else {
|
||
|
|
b[2] = byte(m.Version)
|
||
|
|
}
|
||
|
|
b[3] = byte(m.Type)
|
||
|
|
nativeEndian.PutUint32(b[8:12], uint32(m.Flags))
|
||
|
|
nativeEndian.PutUint16(b[4:6], uint16(m.Index))
|
||
|
|
nativeEndian.PutUint32(b[16:20], uint32(m.ID))
|
||
|
|
nativeEndian.PutUint32(b[20:24], uint32(m.Seq))
|
||
|
|
attrs, err := marshalAddrs(b[w.bodyOff:], m.Addrs)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
if attrs > 0 {
|
||
|
|
nativeEndian.PutUint32(b[12:16], uint32(attrs))
|
||
|
|
}
|
||
|
|
return b, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w *wireFormat) parseRouteMessage(typ RIBType, b []byte) (Message, error) {
|
||
|
|
if len(b) < w.bodyOff {
|
||
|
|
return nil, errMessageTooShort
|
||
|
|
}
|
||
|
|
l := int(nativeEndian.Uint16(b[:2]))
|
||
|
|
if len(b) < l {
|
||
|
|
return nil, errInvalidMessage
|
||
|
|
}
|
||
|
|
m := &RouteMessage{
|
||
|
|
Version: int(b[2]),
|
||
|
|
Type: int(b[3]),
|
||
|
|
Flags: int(nativeEndian.Uint32(b[8:12])),
|
||
|
|
Index: int(nativeEndian.Uint16(b[4:6])),
|
||
|
|
ID: uintptr(nativeEndian.Uint32(b[16:20])),
|
||
|
|
Seq: int(nativeEndian.Uint32(b[20:24])),
|
||
|
|
extOff: w.extOff,
|
||
|
|
raw: b[:l],
|
||
|
|
}
|
||
|
|
errno := syscall.Errno(nativeEndian.Uint32(b[28:32]))
|
||
|
|
if errno != 0 {
|
||
|
|
m.Err = errno
|
||
|
|
}
|
||
|
|
var err error
|
||
|
|
m.Addrs, err = parseAddrs(uint(nativeEndian.Uint32(b[12:16])), parseKernelInetAddr, b[w.bodyOff:])
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
return m, nil
|
||
|
|
}
|