1 files changed, 42 insertions, 0 deletions
diff --git a/cmd/gvisor-containerd-shim/config.go b/cmd/gvisor-containerd-shim/config.go
new file mode 100644
index 000000000..f03690304
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+++ b/cmd/gvisor-containerd-shim/config.go
@@ -0,0 +1,42 @@
+/*
+Copyright 2018 Google LLC
+
+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
+
+    https://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 main
+
+import "github.com/BurntSushi/toml"
+
+// config is the configuration for gvisor containerd shim.
+type config struct {
+	// RuncShim is the shim binary path for standard containerd-shim for runc.
+	// When the runtime is `runc`, gvisor containerd shim will exec current
+	// process to standard containerd-shim. This is a work around for containerd
+	// 1.1. In containerd 1.2, containerd will choose different containerd-shims
+	// based on runtime.
+	RuncShim string `toml:"runc_shim"`
+	// RunscConfig is configuration for runsc. The key value will be converted
+	// to runsc flags --key=value directly.
+	RunscConfig map[string]string `toml:"runsc_config"`
+}
+
+// loadConfig load gvisor containerd shim config from config file.
+func loadConfig(path string) (*config, error) {
+	var c config
+	_, err := toml.DecodeFile(path, &c)
+	if err != nil {
+		return &c, err
+	}
+	return &c, nil
+}