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61 lines
1.5 KiB
Go
61 lines
1.5 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 sysctl
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import (
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"strings"
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)
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// Namespace represents a kernel namespace name.
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type Namespace string
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const (
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// the Linux IPC namespace
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ipcNamespace = Namespace("ipc")
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// the network namespace
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netNamespace = Namespace("net")
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// the zero value if no namespace is known
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unknownNamespace = Namespace("")
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)
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var namespaces = map[string]Namespace{
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"kernel.sem": ipcNamespace,
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}
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var prefixNamespaces = map[string]Namespace{
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"kernel.shm": ipcNamespace,
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"kernel.msg": ipcNamespace,
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"fs.mqueue.": ipcNamespace,
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"net.": netNamespace,
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}
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// NamespacedBy returns the namespace of the Linux kernel for a sysctl, or
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// unknownNamespace if the sysctl is not known to be namespaced.
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func NamespacedBy(val string) Namespace {
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if ns, found := namespaces[val]; found {
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return ns
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}
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for p, ns := range prefixNamespaces {
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if strings.HasPrefix(val, p) {
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return ns
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}
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}
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return unknownNamespace
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}
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