ext: vfs.FileDescriptionImpl and vfs.FilesystemImpl implementations.

- This also gets rid of pipes for now because pipe does not have vfs2 specific
  support yet.
- Added file path resolution logic.
- Fixes testing infrastructure.
- Does not include unit tests yet.

PiperOrigin-RevId: 262213950

1 files changed, 0 insertions, 55 deletions

diff --git a/pkg/sentry/fs/ext/inline_file.go b/pkg/sentry/fs/ext/inline_file.go
deleted file mode 100644
index 67a538ba0..000000000
--- a/pkg/sentry/fs/ext/inline_file.go
+++ /dev/null
@@ -1,55 +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"
-)
-
-// inlineFile is a type of regular file. All the data here is stored in the
-// inode.Data() array.
-type inlineFile struct {
-	regFile regularFile
-}
-
-// Compiles only if inlineFile implements io.ReaderAt.
-var _ io.ReaderAt = (*inlineFile)(nil)
-
-// newInlineFile is the inlineFile constructor.
-func newInlineFile(regFile regularFile) *inlineFile {
-	file := &inlineFile{regFile: regFile}
-	file.regFile.impl = file
-	return file
-}
-
-// ReadAt implements io.ReaderAt.ReadAt.
-func (f *inlineFile) ReadAt(dst []byte, off int64) (int, error) {
-	if len(dst) == 0 {
-		return 0, nil
-	}
-
-	size := f.regFile.inode.diskInode.Size()
-	if uint64(off) >= size {
-		return 0, io.EOF
-	}
-
-	to := uint64(off) + uint64(len(dst))
-	if to > size {
-		to = size
-	}
-
-	n := copy(dst, f.regFile.inode.diskInode.Data()[off:to])
-	return n, nil
-}