Files
containerd/plugins/diff/erofs/plugin/plugin.go
Sebastiaan van Stijn 4b6cc97c4d plugins: modernize: any
go install golang.org/x/tools/go/analysis/passes/modernize/cmd/modernize@latest
    modernize -any -fix ./...

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2026-03-15 18:24:15 +01:00

84 lines
2.4 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 plugin
import (
"fmt"
"github.com/containerd/platforms"
"github.com/containerd/plugin"
"github.com/containerd/plugin/registry"
"github.com/containerd/containerd/v2/core/metadata"
"github.com/containerd/containerd/v2/internal/erofsutils"
"github.com/containerd/containerd/v2/plugins"
"github.com/containerd/containerd/v2/plugins/diff/erofs"
)
// Config represents configuration for the erofs plugin.
type Config struct {
// MkfsOptions are extra options used for the applier
MkfsOptions []string `toml:"mkfs_options"`
// EnableTarIndex enables the tar index mode where the index is generated
// for tar content without extracting the tar
EnableTarIndex bool `toml:"enable_tar_index"`
}
func init() {
registry.Register(&plugin.Registration{
Type: plugins.DiffPlugin,
ID: "erofs",
Requires: []plugin.Type{
plugins.MetadataPlugin,
},
Config: &Config{},
InitFn: func(ic *plugin.InitContext) (any, error) {
tarModeSupported, err := erofsutils.SupportGenerateFromTar()
if err != nil {
return nil, fmt.Errorf("failed to check mkfs.erofs availability: %v: %w", err, plugin.ErrSkipPlugin)
}
if !tarModeSupported {
return nil, fmt.Errorf("mkfs.erofs does not support tar mode (--tar option), disabling erofs differ: %w", plugin.ErrSkipPlugin)
}
md, err := ic.GetSingle(plugins.MetadataPlugin)
if err != nil {
return nil, err
}
p := platforms.DefaultSpec()
p.OS = "linux"
ic.Meta.Platforms = append(ic.Meta.Platforms, p)
cs := md.(*metadata.DB).ContentStore()
config := ic.Config.(*Config)
var opts []erofs.DifferOpt
if len(config.MkfsOptions) > 0 {
opts = append(opts, erofs.WithMkfsOptions(config.MkfsOptions))
}
if config.EnableTarIndex {
opts = append(opts, erofs.WithTarIndexMode())
}
return erofs.NewErofsDiffer(cs, opts...), nil
},
})
}