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package integration
import (
"os"
"os/exec"
"os/user"
"path/filepath"
. "github.com/containers/podman/v4/test/utils"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
. "github.com/onsi/gomega/gexec"
)
// NOTE: Only smoke tests. The system tests (i.e., "./test/system/*") take
// care of function and regression tests. Please consider adding system tests
// rather than e2e tests. System tests are used in RHEL gating.
var _ = Describe("Podman cp", func() {
var (
tempdir string
err error
podmanTest *PodmanTestIntegration
)
BeforeEach(func() {
tempdir, err = CreateTempDirInTempDir()
if err != nil {
os.Exit(1)
}
podmanTest = PodmanTestCreate(tempdir)
podmanTest.Setup()
})
AfterEach(func() {
podmanTest.Cleanup()
f := CurrentGinkgoTestDescription()
processTestResult(f)
})
// Copy a file to the container, then back to the host and make sure
// that the contents match.
It("podman cp file", func() {
srcFile, err := os.CreateTemp("", "")
Expect(err).To(BeNil())
defer srcFile.Close()
defer os.Remove(srcFile.Name())
originalContent := []byte("podman cp file test")
err = os.WriteFile(srcFile.Name(), originalContent, 0644)
Expect(err).To(BeNil())
// Create a container. NOTE that container mustn't be running for copying.
session := podmanTest.Podman([]string{"create", ALPINE})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
name := session.OutputToString()
// Copy TO the container.
// Cannot copy to a nonexistent path (note the trailing "/").
session = podmanTest.Podman([]string{"cp", srcFile.Name(), name + ":foo/"})
session.WaitWithDefaultTimeout()
Expect(session).To(ExitWithError())
// The file will now be created (and written to).
session = podmanTest.Podman([]string{"cp", srcFile.Name(), name + ":foo"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// Copy FROM the container.
destFile, err := os.CreateTemp("", "")
Expect(err).To(BeNil())
defer destFile.Close()
defer os.Remove(destFile.Name())
session = podmanTest.Podman([]string{"cp", name + ":foo", destFile.Name()})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
session = podmanTest.Podman([]string{"start", name})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// Now make sure the content matches.
roundtripContent, err := os.ReadFile(destFile.Name())
Expect(err).To(BeNil())
Expect(roundtripContent).To(Equal(originalContent))
})
// Copy a file to the container, then back to the host in --pid=host
It("podman cp --pid=host file", func() {
SkipIfRootlessCgroupsV1("Not supported for rootless + CgroupsV1")
srcFile, err := os.CreateTemp("", "")
Expect(err).To(BeNil())
defer srcFile.Close()
defer os.Remove(srcFile.Name())
originalContent := []byte("podman cp file test")
err = os.WriteFile(srcFile.Name(), originalContent, 0644)
Expect(err).To(BeNil())
// Create a container. NOTE that container mustn't be running for copying.
session := podmanTest.Podman([]string{"create", "--pid=host", ALPINE, "top"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
name := session.OutputToString()
session = podmanTest.Podman([]string{"start", name})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// The file will now be created (and written to).
session = podmanTest.Podman([]string{"cp", srcFile.Name(), name + ":foo"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// Copy FROM the container.
destFile, err := os.CreateTemp("", "")
Expect(err).To(BeNil())
defer destFile.Close()
defer os.Remove(destFile.Name())
session = podmanTest.Podman([]string{"cp", name + ":foo", destFile.Name()})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// Now make sure the content matches.
roundtripContent, err := os.ReadFile(destFile.Name())
Expect(err).To(BeNil())
Expect(roundtripContent).To(Equal(originalContent))
})
// Create a symlink in the container, use it as a copy destination and
// make sure that the link and the resolved path are accessible and
// give the right content.
It("podman cp symlink", func() {
srcFile, err := os.CreateTemp("", "")
Expect(err).To(BeNil())
defer srcFile.Close()
defer os.Remove(srcFile.Name())
originalContent := []byte("podman cp symlink test")
err = os.WriteFile(srcFile.Name(), originalContent, 0644)
Expect(err).To(BeNil())
session := podmanTest.Podman([]string{"run", "-d", ALPINE, "top"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
name := session.OutputToString()
session = podmanTest.Podman([]string{"exec", name, "ln", "-s", "/tmp", "/test"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
session = podmanTest.Podman([]string{"cp", "--pause=false", srcFile.Name(), name + ":/test"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
session = podmanTest.Podman([]string{"exec", name, "cat", "/tmp/" + filepath.Base(srcFile.Name())})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(session.OutputToString()).To(ContainSubstring(string(originalContent)))
session = podmanTest.Podman([]string{"exec", name, "cat", "/test/" + filepath.Base(srcFile.Name())})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(session.OutputToString()).To(ContainSubstring(string(originalContent)))
})
// Copy a file to a volume in the container. The tricky part is that
// containers mustn't be running for copying, so Podman has to do some
// intense Yoga and 1) detect volume paths on the container, 2) resolve
// the path to the volume's mount point on the host, and 3) copy the
// data to the volume and not the container.
It("podman cp volume", func() {
srcFile, err := os.CreateTemp("", "")
Expect(err).To(BeNil())
defer srcFile.Close()
defer os.Remove(srcFile.Name())
originalContent := []byte("podman cp volume")
err = os.WriteFile(srcFile.Name(), originalContent, 0644)
Expect(err).To(BeNil())
session := podmanTest.Podman([]string{"volume", "create", "data"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
session = podmanTest.Podman([]string{"create", "-v", "data:/data", "--name", "container1", ALPINE})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
session = podmanTest.Podman([]string{"cp", srcFile.Name(), "container1" + ":/data/file.txt"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// Now get the volume's mount point, read the file and make
// sure the contents match.
session = podmanTest.Podman([]string{"volume", "inspect", "data", "--format", "{{.Mountpoint}}"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
volumeMountPoint := session.OutputToString()
copiedContent, err := os.ReadFile(filepath.Join(volumeMountPoint, "file.txt"))
Expect(err).To(BeNil())
Expect(copiedContent).To(Equal(originalContent))
})
// Create another user in the container, let them create a file, copy
// it to the host and back to the container and make sure that we can
// access it, and (roughly) the right users own it.
It("podman cp from ctr chown ", func() {
srcFile, err := os.CreateTemp("", "")
Expect(err).To(BeNil())
defer srcFile.Close()
defer os.Remove(srcFile.Name())
setup := podmanTest.RunTopContainer("testctr")
setup.WaitWithDefaultTimeout()
Expect(setup).Should(Exit(0))
session := podmanTest.Podman([]string{"exec", "testctr", "adduser", "-S", "testuser"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
session = podmanTest.Podman([]string{"exec", "-u", "testuser", "testctr", "touch", "/tmp/testfile"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
session = podmanTest.Podman([]string{"cp", "--pause=false", "testctr:/tmp/testfile", srcFile.Name()})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// owner of the file copied to local machine is not testuser
u, err := user.Current()
Expect(err).To(BeNil())
cmd := exec.Command("ls", "-l", srcFile.Name())
cmdRet, err := cmd.Output()
Expect(err).To(BeNil())
Expect(string(cmdRet)).To(ContainSubstring(u.Username))
session = podmanTest.Podman([]string{"cp", "--pause=false", srcFile.Name(), "testctr:testfile2"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// owner of the file copied to a container is the root user
session = podmanTest.Podman([]string{"exec", "-it", "testctr", "ls", "-l", "testfile2"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(session.OutputToString()).To(ContainSubstring("root"))
})
// Copy the root dir "/" of a container to the host.
It("podman cp the root directory from the ctr to an existing directory on the host ", func() {
container := "copyroottohost"
session := podmanTest.RunTopContainer(container)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
session = podmanTest.Podman([]string{"exec", container, "touch", "/dummy.txt"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
tmpDir, err := os.MkdirTemp("", "")
Expect(err).To(BeNil())
session = podmanTest.Podman([]string{"cp", container + ":/", tmpDir})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
cmd := exec.Command("ls", "-la", tmpDir)
output, err := cmd.Output()
lsOutput := string(output)
Expect(err).To(BeNil())
Expect(lsOutput).To(ContainSubstring("dummy.txt"))
Expect(lsOutput).To(ContainSubstring("tmp"))
Expect(lsOutput).To(ContainSubstring("etc"))
Expect(lsOutput).To(ContainSubstring("var"))
Expect(lsOutput).To(ContainSubstring("bin"))
Expect(lsOutput).To(ContainSubstring("usr"))
})
})
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