github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/pkg/sentry/fs/gofer/fifo.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 gofer
    16  
    17  import (
    18  	"github.com/SagerNet/gvisor/pkg/context"
    19  	"github.com/SagerNet/gvisor/pkg/sentry/fs"
    20  )
    21  
    22  // +stateify savable
    23  type fifo struct {
    24  	fs.InodeOperations
    25  	fileIops *inodeOperations
    26  }
    27  
    28  var _ fs.InodeOperations = (*fifo)(nil)
    29  
    30  // Rename implements fs.InodeOperations. It forwards the call to the underlying
    31  // file inode to handle the file rename. Note that file key remains the same
    32  // after the rename to keep the endpoint mapping.
    33  func (i *fifo) Rename(ctx context.Context, inode *fs.Inode, oldParent *fs.Inode, oldName string, newParent *fs.Inode, newName string, replacement bool) error {
    34  	return i.fileIops.Rename(ctx, inode, oldParent, oldName, newParent, newName, replacement)
    35  }
    36  
    37  // StatFS implements fs.InodeOperations.
    38  func (i *fifo) StatFS(ctx context.Context) (fs.Info, error) {
    39  	return i.fileIops.StatFS(ctx)
    40  }