124 lines
3.4 KiB
Go
124 lines
3.4 KiB
Go
/*
|
|
Copyright The containerd 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 client
|
|
|
|
import (
|
|
"os"
|
|
"strings"
|
|
"syscall"
|
|
"testing"
|
|
|
|
containerd "github.com/containerd/containerd/v2/client"
|
|
"github.com/containerd/containerd/v2/oci"
|
|
"github.com/containerd/containerd/v2/snapshots/overlay/overlayutils"
|
|
"github.com/opencontainers/runtime-spec/specs-go"
|
|
)
|
|
|
|
func TestIDMappedOverlay(t *testing.T) {
|
|
var (
|
|
upperPath string
|
|
lowerPaths []string
|
|
snapshotter = "overlayfs"
|
|
ctx, cancel = testContext(t)
|
|
id = t.Name()
|
|
)
|
|
defer cancel()
|
|
|
|
if ok, err := overlayutils.SupportsIDMappedMounts(); err != nil || !ok {
|
|
t.Skip("overlayfs doesn't support idmapped mounts")
|
|
}
|
|
|
|
client, err := newClient(t, address)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer client.Close()
|
|
|
|
image, err := client.Pull(ctx, testMultiLayeredImage, containerd.WithPullUnpack)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
t.Logf("image %s pulled!", testMultiLayeredImage)
|
|
|
|
hostID := uint32(33)
|
|
contID := uint32(0)
|
|
length := uint32(65536)
|
|
|
|
uidMap := specs.LinuxIDMapping{
|
|
ContainerID: contID,
|
|
HostID: hostID,
|
|
Size: length,
|
|
}
|
|
gidMap := specs.LinuxIDMapping{
|
|
ContainerID: contID,
|
|
HostID: hostID,
|
|
Size: length,
|
|
}
|
|
|
|
container, err := client.NewContainer(ctx, id,
|
|
containerd.WithImage(image),
|
|
containerd.WithImageConfigLabels(image),
|
|
containerd.WithSnapshotter(snapshotter),
|
|
containerd.WithNewSnapshot(id, image, containerd.WithRemapperLabels(uidMap.ContainerID, uidMap.HostID, gidMap.ContainerID, gidMap.HostID, length)),
|
|
containerd.WithNewSpec(oci.WithImageConfig(image),
|
|
oci.WithUserNamespace([]specs.LinuxIDMapping{uidMap}, []specs.LinuxIDMapping{gidMap}),
|
|
longCommand))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer container.Delete(ctx, containerd.WithSnapshotCleanup)
|
|
|
|
t.Logf("container %s created!", id)
|
|
o := client.SnapshotService(snapshotter)
|
|
mounts, err := o.Mounts(ctx, id)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
m := mounts[0]
|
|
if m.Type != "overlay" {
|
|
t.Fatalf("invalid mount -- %s; expected %s", m.Type, snapshotter)
|
|
}
|
|
|
|
for _, o := range m.Options {
|
|
if strings.HasPrefix(o, "upperdir=") {
|
|
upperPath = strings.TrimPrefix(o, "upperdir=")
|
|
} else if strings.HasPrefix(o, "lowerdir=") {
|
|
lowerPaths = strings.Split(strings.TrimPrefix(o, "lowerdir="), ",")
|
|
}
|
|
}
|
|
|
|
t.Log("check lowerdirs")
|
|
for _, l := range lowerPaths {
|
|
if _, err := os.Stat(l); err == nil {
|
|
t.Fatalf("lowerdir=%s should not exist", l)
|
|
}
|
|
}
|
|
|
|
t.Logf("check stats of uppedir=%s", upperPath)
|
|
st, err := os.Stat(upperPath)
|
|
if err != nil {
|
|
t.Fatalf("failed to stat %s", upperPath)
|
|
}
|
|
|
|
if stat, ok := st.Sys().(*syscall.Stat_t); !ok {
|
|
t.Fatalf("incompatible types after stat call: *syscall.Stat_t expected")
|
|
} else if stat.Uid != uidMap.HostID || stat.Gid != gidMap.HostID {
|
|
t.Fatalf("bad mapping: expected {uid: %d, gid: %d}; real {uid: %d, gid: %d}", uidMap.HostID, gidMap.HostID, int(stat.Uid), int(stat.Gid))
|
|
}
|
|
}
|