1 files changed, 63 insertions, 0 deletions
diff --git a/pkg/tcpip/socketops.go b/pkg/tcpip/socketops.go
new file mode 100644
index 000000000..e1b0d6354
--- /dev/null
+++ b/pkg/tcpip/socketops.go
@@ -0,0 +1,63 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcpip
+
+import (
+	"sync/atomic"
+)
+
+// SocketOptions contains all the variables which store values for SOL_SOCKET
+// level options.
+//
+// +stateify savable
+type SocketOptions struct {
+	// These fields are accessed and modified using atomic operations.
+
+	// broadcastEnabled determines whether datagram sockets are allowed to send
+	// packets to a broadcast address.
+	broadcastEnabled uint32
+
+	// passCredEnabled determines whether SCM_CREDENTIALS socket control messages
+	// are enabled.
+	passCredEnabled uint32
+}
+
+func storeAtomicBool(addr *uint32, v bool) {
+	var val uint32
+	if v {
+		val = 1
+	}
+	atomic.StoreUint32(addr, val)
+}
+
+// GetBroadcast gets value for SO_BROADCAST option.
+func (so *SocketOptions) GetBroadcast() bool {
+	return atomic.LoadUint32(&so.broadcastEnabled) != 0
+}
+
+// SetBroadcast sets value for SO_BROADCAST option.
+func (so *SocketOptions) SetBroadcast(v bool) {
+	storeAtomicBool(&so.broadcastEnabled, v)
+}
+
+// GetPassCred gets value for SO_PASSCRED option.
+func (so *SocketOptions) GetPassCred() bool {
+	return atomic.LoadUint32(&so.passCredEnabled) != 0
+}
+
+// SetPassCred sets value for SO_PASSCRED option.
+func (so *SocketOptions) SetPassCred(v bool) {
+	storeAtomicBool(&so.passCredEnabled, v)
+}