[netstack] Update raw socket and hostinet control message parsing.

There are surprisingly few syscall tests that run with hostinet. For example
running the following command only returns two results:
`bazel query test/syscalls:all | grep hostnet`

I think as a result, as our control messages evolved, hostinet was left
behind. Update it to support all control messages netstack supports.

This change also updates sentry's control message parsing logic to make it up to
date with all the control messages we support.

PiperOrigin-RevId: 347508892

1 files changed, 26 insertions, 0 deletions

diff --git a/pkg/sentry/socket/control/control.go b/pkg/sentry/socket/control/control.go
index 5b81e8379..b88cdca48 100644
--- a/pkg/sentry/socket/control/control.go
+++ b/pkg/sentry/socket/control/control.go
@@ -503,6 +503,14 @@ func Parse(t *kernel.Task, socketOrEndpoint interface{}, buf []byte) (socket.Con
 				cmsgs.Unix.Credentials = scmCreds
 				i += binary.AlignUp(length, width)
 
+			case linux.SO_TIMESTAMP:
+				if length < linux.SizeOfTimeval {
+					return socket.ControlMessages{}, syserror.EINVAL
+				}
+				cmsgs.IP.HasTimestamp = true
+				binary.Unmarshal(buf[i:i+linux.SizeOfTimeval], usermem.ByteOrder, &cmsgs.IP.Timestamp)
+				i += binary.AlignUp(length, width)
+
 			default:
 				// Unknown message type.
 				return socket.ControlMessages{}, syserror.EINVAL
@@ -529,6 +537,15 @@ func Parse(t *kernel.Task, socketOrEndpoint interface{}, buf []byte) (socket.Con
 				cmsgs.IP.PacketInfo = packetInfo
 				i += binary.AlignUp(length, width)
 
+			case linux.IP_RECVORIGDSTADDR:
+				var addr linux.SockAddrInet
+				if length < addr.SizeBytes() {
+					return socket.ControlMessages{}, syserror.EINVAL
+				}
+				binary.Unmarshal(buf[i:i+addr.SizeBytes()], usermem.ByteOrder, &addr)
+				cmsgs.IP.OriginalDstAddress = &addr
+				i += binary.AlignUp(length, width)
+
 			default:
 				return socket.ControlMessages{}, syserror.EINVAL
 			}
@@ -542,6 +559,15 @@ func Parse(t *kernel.Task, socketOrEndpoint interface{}, buf []byte) (socket.Con
 				binary.Unmarshal(buf[i:i+linux.SizeOfControlMessageTClass], usermem.ByteOrder, &cmsgs.IP.TClass)
 				i += binary.AlignUp(length, width)
 
+			case linux.IPV6_RECVORIGDSTADDR:
+				var addr linux.SockAddrInet6
+				if length < addr.SizeBytes() {
+					return socket.ControlMessages{}, syserror.EINVAL
+				}
+				binary.Unmarshal(buf[i:i+addr.SizeBytes()], usermem.ByteOrder, &addr)
+				cmsgs.IP.OriginalDstAddress = &addr
+				i += binary.AlignUp(length, width)
+
 			default:
 				return socket.ControlMessages{}, syserror.EINVAL
 			}