hostinet: allow getsockopt(SO_RCVTIMEO) and getsockopt(SO_SNDTIMEO)

Fixes #6603

pkg/sentry/socket/hostinet/socket.go

@@ -401,6 +401,8 @@ func (s *socketOpsCommon) GetSockOpt(t *kernel.Task, level int, name int, optVal
 			optlen = sizeofInt32
 		case linux.SO_LINGER:
 			optlen = unix.SizeofLinger
+		case linux.SO_RCVTIMEO, linux.SO_SNDTIMEO:
+			optlen = linux.SizeOfTimeval
 		}
 	case linux.SOL_TCP:
 		switch name {

runsc/boot/filter/config.go

@@ -474,6 +474,16 @@ func hostInetFilters() seccomp.SyscallRules {
 				seccomp.EqualTo(unix.SOL_SOCKET),
 				seccomp.EqualTo(unix.SO_TIMESTAMP),
 			},
+			{
+				seccomp.MatchAny{},
+				seccomp.EqualTo(unix.SOL_SOCKET),
+				seccomp.EqualTo(unix.SO_RCVTIMEO),
+			},
+			{
+				seccomp.MatchAny{},
+				seccomp.EqualTo(unix.SOL_SOCKET),
+				seccomp.EqualTo(unix.SO_SNDTIMEO),
+			},
 			{
 				seccomp.MatchAny{},
 				seccomp.EqualTo(unix.SOL_TCP),