62 lines
1.8 KiB
Go
62 lines
1.8 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 cgroups
|
||
|
|
|
||
|
|
import (
|
||
|
|
"github.com/pkg/errors"
|
||
|
|
)
|
||
|
|
|
||
|
|
var (
|
||
|
|
// ErrIgnoreSubsystem allows the specific subsystem to be skipped
|
||
|
|
ErrIgnoreSubsystem = errors.New("skip subsystem")
|
||
|
|
// ErrDevicesRequired is returned when the devices subsystem is required but
|
||
|
|
// does not exist or is not active
|
||
|
|
ErrDevicesRequired = errors.New("devices subsystem is required")
|
||
|
|
)
|
||
|
|
|
||
|
|
// InitOpts allows configuration for the creation or loading of a cgroup
|
||
|
|
type InitOpts func(*InitConfig) error
|
||
|
|
|
||
|
|
// InitConfig provides configuration options for the creation
|
||
|
|
// or loading of a cgroup and its subsystems
|
||
|
|
type InitConfig struct {
|
||
|
|
// InitCheck can be used to check initialization errors from the subsystem
|
||
|
|
InitCheck InitCheck
|
||
|
|
}
|
||
|
|
|
||
|
|
func newInitConfig() *InitConfig {
|
||
|
|
return &InitConfig{
|
||
|
|
InitCheck: RequireDevices,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// InitCheck allows subsystems errors to be checked when initialized or loaded
|
||
|
|
type InitCheck func(Subsystem, Path, error) error
|
||
|
|
|
||
|
|
// AllowAny allows any subsystem errors to be skipped
|
||
|
|
func AllowAny(_ Subsystem, _ Path, _ error) error {
|
||
|
|
return ErrIgnoreSubsystem
|
||
|
|
}
|
||
|
|
|
||
|
|
// RequireDevices requires the device subsystem but no others
|
||
|
|
func RequireDevices(s Subsystem, _ Path, _ error) error {
|
||
|
|
if s.Name() == Devices {
|
||
|
|
return ErrDevicesRequired
|
||
|
|
}
|
||
|
|
return ErrIgnoreSubsystem
|
||
|
|
}
|