Bumping k8s dependencies to 1.13

vendor/k8s.io/kubernetes/pkg/util/nsenter/exec.go

@@ -0,0 +1,67 @@
+// +build linux
+
+/*
+Copyright 2018 The Kubernetes 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 nsenter
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/golang/glog"
+	"k8s.io/utils/exec"
+)
+
+// Executor wraps executor interface to be executed via nsenter
+type Executor struct {
+	// Exec implementation
+	executor exec.Interface
+	// Path to the host's root proc path
+	hostProcMountNsPath string
+}
+
+// NewNsenterExecutor returns new nsenter based executor
+func NewNsenterExecutor(hostRootFsPath string, executor exec.Interface) *Executor {
+	hostProcMountNsPath := filepath.Join(hostRootFsPath, mountNsPath)
+	nsExecutor := &Executor{
+		hostProcMountNsPath: hostProcMountNsPath,
+		executor:            executor,
+	}
+	return nsExecutor
+}
+
+// Command returns a command wrapped with nenter
+func (nsExecutor *Executor) Command(cmd string, args ...string) exec.Cmd {
+	fullArgs := append([]string{fmt.Sprintf("--mount=%s", nsExecutor.hostProcMountNsPath), "--"},
+		append([]string{cmd}, args...)...)
+	glog.V(5).Infof("Running nsenter command: %v %v", nsenterPath, fullArgs)
+	return nsExecutor.executor.Command(nsenterPath, fullArgs...)
+}
+
+// CommandContext returns a CommandContext wrapped with nsenter
+func (nsExecutor *Executor) CommandContext(ctx context.Context, cmd string, args ...string) exec.Cmd {
+	fullArgs := append([]string{fmt.Sprintf("--mount=%s", nsExecutor.hostProcMountNsPath), "--"},
+		append([]string{cmd}, args...)...)
+	glog.V(5).Infof("Running nsenter command: %v %v", nsenterPath, fullArgs)
+	return nsExecutor.executor.CommandContext(ctx, nsenterPath, fullArgs...)
+}
+
+// LookPath returns a LookPath wrapped with nsenter
+func (nsExecutor *Executor) LookPath(file string) (string, error) {
+	return "", fmt.Errorf("not implemented, error looking up : %s", file)
+}