1 files changed, 0 insertions, 75 deletions
diff --git a/pkg/sentry/fs/ext/ext.go b/pkg/sentry/fs/ext/ext.go
deleted file mode 100644
index 9d33be08f..000000000
--- a/pkg/sentry/fs/ext/ext.go
+++ /dev/null
@@ -1,75 +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 implements readonly ext(2/3/4) filesystems.
-package ext
-
-import (
-	"io"
-	"sync"
-
-	"gvisor.dev/gvisor/pkg/abi/linux"
-	"gvisor.dev/gvisor/pkg/sentry/fs/ext/disklayout"
-	"gvisor.dev/gvisor/pkg/syserror"
-)
-
-// Filesystem implements vfs.FilesystemImpl.
-type Filesystem struct {
-	// dev is the ReadSeeker for the underlying fs device and is protected by mu.
-	dev io.ReadSeeker
-
-	// mu synchronizes the usage of dev. The ext filesystems take locality into
-	// condsideration, i.e. data blocks of a file will tend to be placed close
-	// together. On a spinning disk, locality reduces the amount of movement of
-	// the head hence speeding up IO operations. On an SSD there are no moving
-	// parts but locality increases the size of each transer request. Hence,
-	// having mutual exclusion on the read seeker while reading a file *should*
-	// help in achieving the intended performance gains.
-	//
-	// Note: This synchronization was not coupled with the ReadSeeker itself
-	// because we want to synchronize across read/seek operations for the
-	// performance gains mentioned above. Helps enforcing one-file-at-a-time IO.
-	mu sync.Mutex
-
-	// sb represents the filesystem superblock. Immutable after initialization.
-	sb disklayout.SuperBlock
-
-	// bgs represents all the block group descriptors for the filesystem.
-	// Immutable after initialization.
-	bgs []disklayout.BlockGroup
-}
-
-// newFilesystem is the Filesystem constructor.
-func newFilesystem(dev io.ReadSeeker) (*Filesystem, error) {
-	fs := Filesystem{dev: dev}
-	var err error
-
-	fs.sb, err = readSuperBlock(dev)
-	if err != nil {
-		return nil, err
-	}
-
-	if fs.sb.Magic() != linux.EXT_SUPER_MAGIC {
-		// mount(2) specifies that EINVAL should be returned if the superblock is
-		// invalid.
-		return nil, syserror.EINVAL
-	}
-
-	fs.bgs, err = readBlockGroups(dev, fs.sb)
-	if err != nil {
-		return nil, err
-	}
-
-	return &fs, nil
-}