62 lines
1.8 KiB
Go
62 lines
1.8 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cgroups
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import (
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"errors"
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)
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var (
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// ErrIgnoreSubsystem allows the specific subsystem to be skipped
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ErrIgnoreSubsystem = errors.New("skip subsystem")
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// ErrDevicesRequired is returned when the devices subsystem is required but
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// does not exist or is not active
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ErrDevicesRequired = errors.New("devices subsystem is required")
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)
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// InitOpts allows configuration for the creation or loading of a cgroup
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type InitOpts func(*InitConfig) error
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// InitConfig provides configuration options for the creation
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// or loading of a cgroup and its subsystems
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type InitConfig struct {
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// InitCheck can be used to check initialization errors from the subsystem
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InitCheck InitCheck
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}
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func newInitConfig() *InitConfig {
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return &InitConfig{
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InitCheck: RequireDevices,
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}
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}
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// InitCheck allows subsystems errors to be checked when initialized or loaded
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type InitCheck func(Subsystem, Path, error) error
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// AllowAny allows any subsystem errors to be skipped
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func AllowAny(_ Subsystem, _ Path, _ error) error {
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return ErrIgnoreSubsystem
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}
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// RequireDevices requires the device subsystem but no others
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func RequireDevices(s Subsystem, _ Path, _ error) error {
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if s.Name() == Devices {
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return ErrDevicesRequired
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}
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return ErrIgnoreSubsystem
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}
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