ext: boilerplate code.

Renamed ext4 to ext since we are targeting ext(2/3/4).
Removed fs.go since we are targeting VFS2.
Added ext.go with filesystem struct.

PiperOrigin-RevId: 257689775

1 files changed, 0 insertions, 61 deletions

diff --git a/pkg/sentry/fs/ext4/fs.go b/pkg/sentry/fs/ext4/fs.go
deleted file mode 100644
index 5c7274821..000000000
--- a/pkg/sentry/fs/ext4/fs.go
+++ /dev/null
@@ -1,61 +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 ext4 implements the ext4 filesystem.
-package ext4
-
-import (
-	"gvisor.dev/gvisor/pkg/sentry/context"
-	"gvisor.dev/gvisor/pkg/sentry/fs"
-)
-
-// filesystem implements fs.Filesystem for ext4.
-//
-// +stateify savable
-type filesystem struct{}
-
-func init() {
-	fs.RegisterFilesystem(&filesystem{})
-}
-
-// FilesystemName is the name under which the filesystem is registered.
-// Name matches fs/ext4/super.c:ext4_fs_type.name.
-const FilesystemName = "ext4"
-
-// Name is the name of the file system.
-func (*filesystem) Name() string {
-	return FilesystemName
-}
-
-// AllowUserMount prohibits users from using mount(2) with this file system.
-func (*filesystem) AllowUserMount() bool {
-	return false
-}
-
-// AllowUserList prohibits this filesystem to be listed in /proc/filesystems.
-func (*filesystem) AllowUserList() bool {
-	return false
-}
-
-// Flags returns properties of the filesystem.
-//
-// In Linux, ext4 returns FS_REQUIRES_DEV. See fs/ext4/super.c
-func (*filesystem) Flags() fs.FilesystemFlags {
-	return fs.FilesystemRequiresDev
-}
-
-// Mount returns the root inode of the ext4 fs.
-func (f *filesystem) Mount(ctx context.Context, device string, flags fs.MountSourceFlags, data string, cgroupsInt interface{}) (*fs.Inode, error) {
-	panic("unimplemented")
-}