github.com/metacubex/gvisor@v0.0.0-20240320004321-933faba989ec/pkg/sentry/fsimpl/devtmpfs/save_restore.go (about)

     1  // Copyright 2020 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package devtmpfs
    16  
    17  import "context"
    18  
    19  // afterLoad is invoked by stateify.
    20  func (fst *FilesystemType) afterLoad(context.Context) {
    21  	if fst.fs != nil {
    22  		// Ensure that we don't create another filesystem.
    23  		fst.initOnce.Do(func() {})
    24  	}
    25  }