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Diffstat (limited to 'pkg/sentry/fs/ext/regular_file.go')
-rw-r--r--pkg/sentry/fs/ext/regular_file.go85
1 files changed, 0 insertions, 85 deletions
diff --git a/pkg/sentry/fs/ext/regular_file.go b/pkg/sentry/fs/ext/regular_file.go
deleted file mode 100644
index b48f61795..000000000
--- a/pkg/sentry/fs/ext/regular_file.go
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// 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 ext
-
-import (
- "io"
-)
-
-// fileReader is used to abstact away the complexity of how the file data is
-// stored under the hood. Provides a method to get a file reader which can be
-// used to read file data without worrying about how it is organized on disk.
-type fileReader interface {
-
- // getFileReader returns a Reader implementation which can be used to read a
- // file. It abstracts away the complexity of how the file is actually
- // organized on disk. The reader is initialized with the passed offset.
- //
- // This reader is not meant to be retained across Read operations as it needs
- // to be reinitialized with the correct offset for every Read.
- getFileReader(dev io.ReaderAt, blkSize uint64, offset uint64) io.Reader
-}
-
-// regularFile represents a regular file's inode. This too follows the
-// inheritance pattern prevelant in the vfs layer described in
-// pkg/sentry/vfs/README.md.
-type regularFile struct {
- inode inode
-
- // This is immutable. The first field of fileReader implementations must be
- // regularFile to ensure temporality.
- impl fileReader
-}
-
-// newRegularFile is the regularFile constructor. It figures out what kind of
-// file this is and initializes the fileReader.
-func newRegularFile(dev io.ReaderAt, blkSize uint64, inode inode) (*regularFile, error) {
- regFile := regularFile{
- inode: inode,
- }
-
- inodeFlags := inode.diskInode.Flags()
-
- if inodeFlags.Extents {
- file, err := newExtentFile(dev, blkSize, regFile)
- if err != nil {
- return nil, err
- }
-
- file.regFile.inode.impl = &file.regFile
- return &file.regFile, nil
- }
-
- if inodeFlags.Inline {
- if inode.diskInode.Size() > 60 {
- panic("ext fs: inline file larger than 60 bytes")
- }
-
- file := newInlineFile(regFile)
- file.regFile.inode.impl = &file.regFile
- return &file.regFile, nil
- }
-
- file, err := newBlockMapFile(blkSize, regFile)
- if err != nil {
- return nil, err
- }
- file.regFile.inode.impl = &file.regFile
- return &file.regFile, nil
-}
-
-func (f *regularFile) blksUsed(blkSize uint64) uint64 {
- return (f.inode.diskInode.Size() + blkSize - 1) / blkSize
-}