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//go:build linux || freebsd
package integration
import (
"fmt"
"os"
"path/filepath"
. "github.com/containers/podman/v5/test/utils"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
)
func buildDataVolumeImage(pTest *PodmanTestIntegration, image, data, dest string) {
// Create a dummy file for data volume
dummyFile := filepath.Join(pTest.TempDir, data)
err := os.WriteFile(dummyFile, []byte(data), 0o644)
Expect(err).ToNot(HaveOccurred())
// Create a data volume container image but no CMD binary in it
containerFile := fmt.Sprintf(`FROM scratch
CMD doesnotexist.sh
ADD %s %s/
VOLUME %s/`, data, dest, dest)
pTest.BuildImage(containerFile, image, "false")
}
func createContainersConfFile(pTest *PodmanTestIntegration) {
configPath := filepath.Join(pTest.TempDir, "containers.conf")
containersConf := []byte("[containers]\nprepare_volume_on_create = true\n")
err := os.WriteFile(configPath, containersConf, os.ModePerm)
Expect(err).ToNot(HaveOccurred())
// Set custom containers.conf file
os.Setenv("CONTAINERS_CONF", configPath)
if IsRemote() {
pTest.RestartRemoteService()
}
}
func checkDataVolumeContainer(pTest *PodmanTestIntegration, image, cont, dest, data string) {
create := pTest.Podman([]string{"create", "--name", cont, image})
create.WaitWithDefaultTimeout()
Expect(create).Should(ExitCleanly())
inspect := pTest.InspectContainer(cont)
Expect(inspect).To(HaveLen(1))
Expect(inspect[0].Mounts).To(HaveLen(1))
Expect(inspect[0].Mounts[0]).To(HaveField("Destination", dest))
mntName, mntSource := inspect[0].Mounts[0].Name, inspect[0].Mounts[0].Source
volList := pTest.Podman([]string{"volume", "list", "--quiet"})
volList.WaitWithDefaultTimeout()
Expect(volList).Should(ExitCleanly())
Expect(volList.OutputToStringArray()).To(HaveLen(1))
Expect(volList.OutputToStringArray()[0]).To(Equal(mntName))
// Check the mount source directory
files, err := os.ReadDir(mntSource)
Expect(err).ToNot(HaveOccurred())
if data == "" {
Expect(files).To(BeEmpty())
} else {
Expect(files).To(HaveLen(1))
Expect(files[0].Name()).To(Equal(data))
}
}
var _ = Describe("Podman create data volume", func() {
It("podman create with volume data copy turned off", func() {
imgName, volData, volDest := "dataimg", "dummy", "/test"
buildDataVolumeImage(podmanTest, imgName, volData, volDest)
// Create a container with the default containers.conf and
// check that the volume is not copied from the image.
checkDataVolumeContainer(podmanTest, imgName, "ctr-nocopy", volDest, "")
})
It("podman create with volume data copy turned on", func() {
imgName, volData, volDest := "dataimg", "dummy", "/test"
buildDataVolumeImage(podmanTest, imgName, volData, volDest)
// Create a container with the custom containers.conf and
// check that the volume is copied from the image.
createContainersConfFile(podmanTest)
checkDataVolumeContainer(podmanTest, imgName, "ctr-copy", volDest, volData)
})
It("podman run with volume data copy turned on", func() {
// Create a container with the custom containers.conf and
// check that the container is run successfully
createContainersConfFile(podmanTest)
session := podmanTest.Podman([]string{"run", "--rm", ALPINE, "echo"})
session.WaitWithDefaultTimeout()
Expect(session).Should(ExitCleanly())
})
})
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