mirror of
https://github.com/ceph/ceph-csi.git
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68 lines
2.2 KiB
Go
68 lines
2.2 KiB
Go
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// +build linux
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/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package nsenter
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import (
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"context"
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"fmt"
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"path/filepath"
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"k8s.io/klog"
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"k8s.io/utils/exec"
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)
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// Executor wraps executor interface to be executed via nsenter
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type Executor struct {
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// Exec implementation
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executor exec.Interface
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// Path to the host's root proc path
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hostProcMountNsPath string
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}
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// NewNsenterExecutor returns new nsenter based executor
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func NewNsenterExecutor(hostRootFsPath string, executor exec.Interface) *Executor {
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hostProcMountNsPath := filepath.Join(hostRootFsPath, mountNsPath)
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nsExecutor := &Executor{
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hostProcMountNsPath: hostProcMountNsPath,
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executor: executor,
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}
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return nsExecutor
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}
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// Command returns a command wrapped with nenter
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func (nsExecutor *Executor) Command(cmd string, args ...string) exec.Cmd {
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fullArgs := append([]string{fmt.Sprintf("--mount=%s", nsExecutor.hostProcMountNsPath), "--"},
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append([]string{cmd}, args...)...)
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klog.V(5).Infof("Running nsenter command: %v %v", nsenterPath, fullArgs)
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return nsExecutor.executor.Command(nsenterPath, fullArgs...)
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}
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// CommandContext returns a CommandContext wrapped with nsenter
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func (nsExecutor *Executor) CommandContext(ctx context.Context, cmd string, args ...string) exec.Cmd {
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fullArgs := append([]string{fmt.Sprintf("--mount=%s", nsExecutor.hostProcMountNsPath), "--"},
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append([]string{cmd}, args...)...)
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klog.V(5).Infof("Running nsenter command: %v %v", nsenterPath, fullArgs)
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return nsExecutor.executor.CommandContext(ctx, nsenterPath, fullArgs...)
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}
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// LookPath returns a LookPath wrapped with nsenter
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func (nsExecutor *Executor) LookPath(file string) (string, error) {
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return "", fmt.Errorf("not implemented, error looking up : %s", file)
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}
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