1 files changed, 41 insertions, 0 deletions
diff --git a/pkg/abi/abi.go b/pkg/abi/abi.go
new file mode 100644
index 000000000..d56c481c9
--- /dev/null
+++ b/pkg/abi/abi.go
@@ -0,0 +1,41 @@
+// Copyright 2018 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 abi describes the interface between a kernel and userspace.
+package abi
+
+import (
+	"fmt"
+)
+
+// OS describes the target operating system for an ABI.
+//
+// Note that OS is architecture-independent. The details of the OS ABI will
+// vary between architectures.
+type OS int
+
+const (
+	// Linux is the Linux ABI.
+	Linux OS = iota
+)
+
+// String implements fmt.Stringer.
+func (o OS) String() string {
+	switch o {
+	case Linux:
+		return "linux"
+	default:
+		return fmt.Sprintf("OS(%d)", o)
+	}
+}