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47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
/*
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Copyright 2016 The Kubernetes 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 cm
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import (
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"fmt"
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libcontainercgroups "github.com/opencontainers/runc/libcontainer/cgroups"
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)
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// GetCgroupSubsystems returns information about the mounted cgroup subsystems
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func GetCgroupSubsystems() (*CgroupSubsystems, error) {
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// get all cgroup mounts.
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allCgroups, err := libcontainercgroups.GetCgroupMounts()
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if err != nil {
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return &CgroupSubsystems{}, err
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}
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if len(allCgroups) == 0 {
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return &CgroupSubsystems{}, fmt.Errorf("failed to find cgroup mounts")
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}
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mountPoints := make(map[string]string, len(allCgroups))
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for _, mount := range allCgroups {
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for _, subsystem := range mount.Subsystems {
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mountPoints[subsystem] = mount.Mountpoint
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}
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}
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return &CgroupSubsystems{
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Mounts: allCgroups,
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MountPoints: mountPoints,
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}, nil
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}
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