60 lines
991 B
Go
60 lines
991 B
Go
|
package vmnet
|
||
|
|
|
||
|
|
// #cgo CFLAGS: -x objective-c
|
||
|
|
// #cgo LDFLAGS: -lobjc -framework vmnet
|
||
|
|
// #include "vmnet.h"
|
||
|
|
import "C"
|
||
|
|
import (
|
||
|
|
"io"
|
||
|
|
"unsafe"
|
||
|
|
)
|
||
|
|
|
||
|
|
type VMNet struct {
|
||
|
|
io.ReadWriter
|
||
|
|
|
||
|
|
iface C.interface_ref
|
||
|
|
mps C.ulonglong
|
||
|
|
MaxPacketSize int
|
||
|
|
}
|
||
|
|
|
||
|
|
func (v *VMNet) Start(hostIface string) error {
|
||
|
|
C._vmnet_start(&v.iface, C.CString(hostIface), &v.mps)
|
||
|
|
if v.iface == nil {
|
||
|
|
return ErrUnableToStart
|
||
|
|
}
|
||
|
|
|
||
|
|
v.MaxPacketSize = int(v.mps)
|
||
|
|
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (v *VMNet) Stop() error {
|
||
|
|
C._vmnet_stop(v.iface)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (v *VMNet) Read(p []byte) (n int, err error) {
|
||
|
|
for {
|
||
|
|
var cBytes unsafe.Pointer
|
||
|
|
var cBytesLen C.ulong
|
||
|
|
|
||
|
|
C._vmnet_read(v.iface, v.mps, &cBytes, &cBytesLen)
|
||
|
|
|
||
|
|
if cBytes == nil {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
|
||
|
|
copy(p, C.GoBytes(cBytes, C.int(cBytesLen)))
|
||
|
|
return int(cBytesLen), nil
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (v *VMNet) Write(p []byte) (n int, err error) {
|
||
|
|
C._vmnet_write(v.iface, C.CBytes(p), C.ulong(len(p)))
|
||
|
|
return len(p), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func New() *VMNet {
|
||
|
|
return &VMNet{}
|
||
|
|
}
|