ed5f8dfeb2
The project has been moved so internally we simply rename everything. Consumers are recommended to update their vendored version of cni.
97 lines
3.1 KiB
Go
97 lines
3.1 KiB
Go
// Copyright 2016 CNI 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 testhelpers_test contains unit tests of the testhelpers
|
|
//
|
|
// Some of this stuff is non-trivial and can interact in surprising ways
|
|
// with the Go runtime. Better be safe.
|
|
package testhelpers_test
|
|
|
|
import (
|
|
"fmt"
|
|
"math/rand"
|
|
"path/filepath"
|
|
|
|
"golang.org/x/sys/unix"
|
|
|
|
"github.com/containernetworking/cni/pkg/testhelpers"
|
|
. "github.com/onsi/ginkgo"
|
|
. "github.com/onsi/gomega"
|
|
)
|
|
|
|
var _ = Describe("Test helper functions", func() {
|
|
Describe("MakeNetworkNS", func() {
|
|
It("should return the filepath to a network namespace", func() {
|
|
containerID := fmt.Sprintf("c-%x", rand.Int31())
|
|
nsPath := testhelpers.MakeNetworkNS(containerID)
|
|
|
|
Expect(nsPath).To(BeAnExistingFile())
|
|
|
|
testhelpers.RemoveNetworkNS(containerID)
|
|
})
|
|
|
|
It("should return a network namespace different from that of the caller", func() {
|
|
containerID := fmt.Sprintf("c-%x", rand.Int31())
|
|
|
|
By("discovering the inode of the current netns")
|
|
originalNetNSPath := currentNetNSPath()
|
|
originalNetNSInode, err := testhelpers.GetInode(originalNetNSPath)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
By("creating a new netns")
|
|
createdNetNSPath := testhelpers.MakeNetworkNS(containerID)
|
|
defer testhelpers.RemoveNetworkNS(createdNetNSPath)
|
|
|
|
By("discovering the inode of the created netns")
|
|
createdNetNSInode, err := testhelpers.GetInode(createdNetNSPath)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
By("comparing the inodes")
|
|
Expect(createdNetNSInode).NotTo(Equal(originalNetNSInode))
|
|
})
|
|
|
|
It("should not leak the new netns onto any threads in the process", func() {
|
|
containerID := fmt.Sprintf("c-%x", rand.Int31())
|
|
|
|
By("creating a new netns")
|
|
createdNetNSPath := testhelpers.MakeNetworkNS(containerID)
|
|
defer testhelpers.RemoveNetworkNS(createdNetNSPath)
|
|
|
|
By("discovering the inode of the created netns")
|
|
createdNetNSInode, err := testhelpers.GetInode(createdNetNSPath)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
By("comparing against the netns inode of every thread in the process")
|
|
for _, netnsPath := range allNetNSInCurrentProcess() {
|
|
netnsInode, err := testhelpers.GetInode(netnsPath)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
Expect(netnsInode).NotTo(Equal(createdNetNSInode))
|
|
}
|
|
})
|
|
})
|
|
})
|
|
|
|
func currentNetNSPath() string {
|
|
pid := unix.Getpid()
|
|
tid := unix.Gettid()
|
|
return fmt.Sprintf("/proc/%d/task/%d/ns/net", pid, tid)
|
|
}
|
|
|
|
func allNetNSInCurrentProcess() []string {
|
|
pid := unix.Getpid()
|
|
paths, err := filepath.Glob(fmt.Sprintf("/proc/%d/task/*/ns/net", pid))
|
|
Expect(err).NotTo(HaveOccurred())
|
|
return paths
|
|
}
|