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authorgVisor bot <gvisor-bot@google.com>2019-09-27 14:12:35 -0700
committergVisor bot <gvisor-bot@google.com>2019-09-27 14:14:04 -0700
commitabbee5615f4480d8a41b4cf63839d2ab13b19abf (patch)
treeba9b08e4aaf1b73c48f606098c069d83c92e4178 /pkg/sentry/socket/epsocket/epsocket.go
parent7582385f05f5f4df93c9b8350a615cae8e6fd947 (diff)
Implement SO_BINDTODEVICE sockopt
PiperOrigin-RevId: 271644926
Diffstat (limited to 'pkg/sentry/socket/epsocket/epsocket.go')
-rw-r--r--pkg/sentry/socket/epsocket/epsocket.go20
1 files changed, 20 insertions, 0 deletions
diff --git a/pkg/sentry/socket/epsocket/epsocket.go b/pkg/sentry/socket/epsocket/epsocket.go
index 3e66f9cbb..5812085fa 100644
--- a/pkg/sentry/socket/epsocket/epsocket.go
+++ b/pkg/sentry/socket/epsocket/epsocket.go
@@ -942,6 +942,19 @@ func getSockOptSocket(t *kernel.Task, s socket.Socket, ep commonEndpoint, family
return int32(v), nil
+ case linux.SO_BINDTODEVICE:
+ var v tcpip.BindToDeviceOption
+ if err := ep.GetSockOpt(&v); err != nil {
+ return nil, syserr.TranslateNetstackError(err)
+ }
+ if len(v) == 0 {
+ return []byte{}, nil
+ }
+ if outLen < linux.IFNAMSIZ {
+ return nil, syserr.ErrInvalidArgument
+ }
+ return append([]byte(v), 0), nil
+
case linux.SO_BROADCAST:
if outLen < sizeOfInt32 {
return nil, syserr.ErrInvalidArgument
@@ -1305,6 +1318,13 @@ func setSockOptSocket(t *kernel.Task, s socket.Socket, ep commonEndpoint, name i
v := usermem.ByteOrder.Uint32(optVal)
return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.ReusePortOption(v)))
+ case linux.SO_BINDTODEVICE:
+ n := bytes.IndexByte(optVal, 0)
+ if n == -1 {
+ n = len(optVal)
+ }
+ return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.BindToDeviceOption(optVal[:n])))
+
case linux.SO_BROADCAST:
if len(optVal) < sizeOfInt32 {
return syserr.ErrInvalidArgument