1e3d680d13
- After creating new netns, switch back to main netns - Lock thread during test and test setup
78 lines
1.6 KiB
Go
78 lines
1.6 KiB
Go
package main_test
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import (
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"fmt"
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"os"
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"runtime"
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"github.com/onsi/gomega/gexec"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"testing"
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"golang.org/x/sys/unix"
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)
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var pathToLoPlugin string
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func TestLoopback(t *testing.T) {
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RegisterFailHandler(Fail)
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RunSpecs(t, "Loopback Suite")
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}
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var _ = BeforeSuite(func() {
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var err error
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pathToLoPlugin, err = gexec.Build("github.com/appc/cni/plugins/main/loopback")
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Expect(err).NotTo(HaveOccurred())
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})
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var _ = AfterSuite(func() {
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gexec.CleanupBuildArtifacts()
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})
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func makeNetworkNS(containerID string) string {
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namespace := "/var/run/netns/" + containerID
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pid := unix.Getpid()
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tid := unix.Gettid()
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err := os.MkdirAll("/var/run/netns", 0600)
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Expect(err).NotTo(HaveOccurred())
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runtime.LockOSThread()
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defer runtime.UnlockOSThread()
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go (func() {
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defer GinkgoRecover()
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err = unix.Unshare(unix.CLONE_NEWNET)
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Expect(err).NotTo(HaveOccurred())
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fd, err := os.Create(namespace)
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Expect(err).NotTo(HaveOccurred())
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defer fd.Close()
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err = unix.Mount("/proc/self/ns/net", namespace, "none", unix.MS_BIND, "")
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Expect(err).NotTo(HaveOccurred())
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})()
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Eventually(namespace).Should(BeAnExistingFile())
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fd, err := unix.Open(fmt.Sprintf("/proc/%d/task/%d/ns/net", pid, tid), unix.O_RDONLY, 0)
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Expect(err).NotTo(HaveOccurred())
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defer unix.Close(fd)
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_, _, e1 := unix.Syscall(unix.SYS_SETNS, uintptr(fd), uintptr(unix.CLONE_NEWNET), 0)
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Expect(e1).To(BeZero())
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return namespace
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}
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func removeNetworkNS(networkNS string) error {
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err := unix.Unmount(networkNS, unix.MNT_DETACH)
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err = os.RemoveAll(networkNS)
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return err
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}
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