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moby--moby/vendor/github.com/godbus/dbus/v5/transport_generic.go
Akihiro Suda b79dec8138
vendor: github.com/opencontainers/runc v1.1.0
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
2022-02-06 17:16:23 +09:00

52 lines
917 B
Go

package dbus
import (
"encoding/binary"
"errors"
"io"
"unsafe"
)
var nativeEndian binary.ByteOrder
func detectEndianness() binary.ByteOrder {
var x uint32 = 0x01020304
if *(*byte)(unsafe.Pointer(&x)) == 0x01 {
return binary.BigEndian
}
return binary.LittleEndian
}
func init() {
nativeEndian = detectEndianness()
}
type genericTransport struct {
io.ReadWriteCloser
}
func (t genericTransport) SendNullByte() error {
_, err := t.Write([]byte{0})
return err
}
func (t genericTransport) SupportsUnixFDs() bool {
return false
}
func (t genericTransport) EnableUnixFDs() {}
func (t genericTransport) ReadMessage() (*Message, error) {
return DecodeMessage(t)
}
func (t genericTransport) SendMessage(msg *Message) error {
fds, err := msg.CountFds()
if err != nil {
return err
}
if fds != 0 {
return errors.New("dbus: unix fd passing not enabled")
}
return msg.EncodeTo(t, nativeEndian)
}