120 lines
3.3 KiB
Go
120 lines
3.3 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 opts
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"sort"
|
|
|
|
runtimespec "github.com/opencontainers/runtime-spec/specs-go"
|
|
runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
|
|
|
|
"github.com/containerd/containerd/v2/core/containers"
|
|
"github.com/containerd/containerd/v2/pkg/oci"
|
|
osinterface "github.com/containerd/containerd/v2/pkg/os"
|
|
)
|
|
|
|
// WithDarwinMounts adds mounts from CRI's container config + extra mounts.
|
|
func WithDarwinMounts(osi osinterface.OS, config *runtime.ContainerConfig, extra []*runtime.Mount) oci.SpecOpts {
|
|
return func(ctx context.Context, client oci.Client, container *containers.Container, s *oci.Spec) error {
|
|
// mergeMounts merge CRI mounts with extra mounts. If a mount destination
|
|
// is mounted by both a CRI mount and an extra mount, the CRI mount will
|
|
// be kept.
|
|
var (
|
|
criMounts = config.GetMounts()
|
|
mounts = append([]*runtime.Mount{}, criMounts...)
|
|
)
|
|
|
|
// Copy all mounts from extra mounts, except for mounts overridden by CRI.
|
|
for _, e := range extra {
|
|
found := false
|
|
for _, c := range criMounts {
|
|
if cleanMount(e.ContainerPath) == cleanMount(c.ContainerPath) {
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
if !found {
|
|
mounts = append(mounts, e)
|
|
}
|
|
}
|
|
|
|
// Sort mounts in number of parts. This ensures that high level mounts don't
|
|
// shadow other mounts.
|
|
sort.Sort(orderedMounts(mounts))
|
|
|
|
// Copy all mounts from default mounts, except for
|
|
// - mounts overridden by supplied mount;
|
|
mountSet := make(map[string]struct{})
|
|
for _, m := range mounts {
|
|
mountSet[filepath.Clean(m.ContainerPath)] = struct{}{}
|
|
}
|
|
|
|
defaultMounts := s.Mounts
|
|
s.Mounts = nil
|
|
|
|
for _, m := range defaultMounts {
|
|
dst := cleanMount(m.Destination)
|
|
if _, ok := mountSet[dst]; ok {
|
|
// filter out mount overridden by a supplied mount
|
|
continue
|
|
}
|
|
s.Mounts = append(s.Mounts, m)
|
|
}
|
|
|
|
for _, mount := range mounts {
|
|
var (
|
|
dst = mount.GetContainerPath()
|
|
src = mount.GetHostPath()
|
|
)
|
|
|
|
// Create the host path if it doesn't exist.
|
|
if _, err := osi.Stat(src); err != nil {
|
|
if !os.IsNotExist(err) {
|
|
return fmt.Errorf("failed to stat %q: %w", src, err)
|
|
}
|
|
if err := osi.MkdirAll(src, 0755); err != nil {
|
|
return fmt.Errorf("failed to mkdir %q: %w", src, err)
|
|
}
|
|
}
|
|
|
|
src, err := osi.ResolveSymbolicLink(src)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to resolve symlink %q: %w", src, err)
|
|
}
|
|
|
|
var options []string
|
|
if mount.GetReadonly() {
|
|
options = append(options, "ro")
|
|
} else {
|
|
options = append(options, "rw")
|
|
}
|
|
|
|
s.Mounts = append(s.Mounts, runtimespec.Mount{
|
|
Source: src,
|
|
Destination: dst,
|
|
Type: "bind",
|
|
Options: options,
|
|
})
|
|
}
|
|
return nil
|
|
}
|
|
}
|