| /* |
| 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 ( |
| "errors" |
| "os" |
| ) |
| |
| var ( |
| ErrInvalidPid = errors.New("cgroups: pid must be greater than 0") |
| ErrMountPointNotExist = errors.New("cgroups: cgroup mountpoint does not exist") |
| ErrInvalidFormat = errors.New("cgroups: parsing file with invalid format failed") |
| ErrFreezerNotSupported = errors.New("cgroups: freezer cgroup not supported on this system") |
| ErrMemoryNotSupported = errors.New("cgroups: memory cgroup not supported on this system") |
| ErrCgroupDeleted = errors.New("cgroups: cgroup deleted") |
| ErrNoCgroupMountDestination = errors.New("cgroups: cannot find cgroup mount destination") |
| ) |
| |
| // ErrorHandler is a function that handles and acts on errors |
| type ErrorHandler func(err error) error |
| |
| // IgnoreNotExist ignores any errors that are for not existing files |
| func IgnoreNotExist(err error) error { |
| if os.IsNotExist(err) { |
| return nil |
| } |
| return err |
| } |
| |
| func errPassthrough(err error) error { |
| return err |
| } |