104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
|
// Copyright 2018 Google Inc.
|
||
|
|
//
|
||
|
|
// 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 root is used for tests that requires sysadmin privileges run. First,
|
||
|
|
// follow the setup instruction in runsc/test/README.md. To run these test:
|
||
|
|
//
|
||
|
|
// bazel build //runsc/test/root:root_test
|
||
|
|
// root_test=$(find -L ./bazel-bin/ -executable -type f -name root_test | grep __main__)
|
||
|
|
// sudo RUNSC_RUNTIME=runsc-test ${root_test}
|
||
|
|
package root
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"io/ioutil"
|
||
|
|
"os"
|
||
|
|
"path/filepath"
|
||
|
|
"reflect"
|
||
|
|
"sort"
|
||
|
|
"strconv"
|
||
|
|
"strings"
|
||
|
|
"testing"
|
||
|
|
|
||
|
|
"github.com/syndtr/gocapability/capability"
|
||
|
|
"gvisor.googlesource.com/gvisor/runsc/specutils"
|
||
|
|
"gvisor.googlesource.com/gvisor/runsc/test/testutil"
|
||
|
|
)
|
||
|
|
|
||
|
|
// TestChroot verifies that the sandbox is chroot'd and that mounts are cleaned
|
||
|
|
// up after the sandbox is destroyed.
|
||
|
|
func TestChroot(t *testing.T) {
|
||
|
|
d := testutil.MakeDocker("chroot-test")
|
||
|
|
if err := d.Run("alpine", "sleep", "10000"); err != nil {
|
||
|
|
t.Fatalf("docker run failed: %v", err)
|
||
|
|
}
|
||
|
|
defer d.CleanUp()
|
||
|
|
|
||
|
|
pid, err := d.SandboxPid()
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("Docker.SandboxPid(): %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check that sandbox is chroot'ed.
|
||
|
|
chroot, err := filepath.EvalSymlinks(filepath.Join("/proc", strconv.Itoa(pid), "root"))
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("error resolving /proc/<pid>/root symlink: %v", err)
|
||
|
|
}
|
||
|
|
if want := "/tmp/runsc-sandbox-chroot-"; !strings.HasPrefix(chroot, want) {
|
||
|
|
t.Errorf("sandbox is not chroot'd, it should be inside: %q, got: %q", want, chroot)
|
||
|
|
}
|
||
|
|
|
||
|
|
path, err := filepath.EvalSymlinks(filepath.Join("/proc", strconv.Itoa(pid), "cwd"))
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("error resolving /proc/<pid>/cwd symlink: %v", err)
|
||
|
|
}
|
||
|
|
if chroot != path {
|
||
|
|
t.Errorf("sandbox current dir is wrong, want: %q, got: %q", chroot, path)
|
||
|
|
}
|
||
|
|
|
||
|
|
fi, err := ioutil.ReadDir(chroot)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("error listing %q: %v", chroot, err)
|
||
|
|
}
|
||
|
|
if want, got := 2, len(fi); want != got {
|
||
|
|
t.Fatalf("chroot dir got %d entries, want %d", want, got)
|
||
|
|
}
|
||
|
|
|
||
|
|
// chroot dir is prepared by runsc and should contains only the executable
|
||
|
|
// and /proc.
|
||
|
|
files := []string{fi[0].Name(), fi[1].Name()}
|
||
|
|
sort.Strings(files)
|
||
|
|
if want := []string{"proc", "runsc"}; !reflect.DeepEqual(files, want) {
|
||
|
|
t.Errorf("chroot got children %v, want %v", files, want)
|
||
|
|
}
|
||
|
|
|
||
|
|
d.CleanUp()
|
||
|
|
|
||
|
|
// Check that chroot directory was cleaned up.
|
||
|
|
if _, err := os.Stat(chroot); err == nil || !os.IsNotExist(err) {
|
||
|
|
t.Errorf("chroot directory %q was not deleted: %v", chroot, err)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestMain(m *testing.M) {
|
||
|
|
testutil.EnsureSupportedDockerVersion()
|
||
|
|
|
||
|
|
if !specutils.HasCapabilities(capability.CAP_SYS_ADMIN, capability.CAP_DAC_OVERRIDE) {
|
||
|
|
fmt.Println("Test requires sysadmin privileges to run. Try again with sudo.")
|
||
|
|
os.Exit(1)
|
||
|
|
}
|
||
|
|
|
||
|
|
os.Exit(m.Run())
|
||
|
|
}
|