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kubensmnt.go
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kubensmnt.go
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/*
* Copyright 2022 Jim Ramsay <jramsay@redhat.com>
*
* 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 kubensmnt
// EnvName is the name of the environment variable where we check for a mount namespace bindmount.
// If unset, no action is taken. If set and points at a mount namespace
// bindmount, enter that mount namespace before executing this Go program. If
// set and an error occurs, the Status function will report an error.
const EnvName = "KUBENSMNT" // Note: Must be manually kept in-sync with the value in kubensmnt.h
// Status returns the configured KubeNS mount namespace filename (or an empty
// string if not configured), and an error representing whether the namespace
// join succeeded. The actual work of entering a mount namespace must be done
// in a C init-function before any Go threads start up, so all we can do inside
// Go is provide a report of what happened.
func Status() (string, error) {
// Dispatch to the proper build-time instance (see kubensmnt_*.go)
return status()
}