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, 75 deletions

diff --git a/pkg/sentry/fs/ext4/disklayout/superblock_32.go b/pkg/sentry/fs/ext4/disklayout/superblock_32.go
deleted file mode 100644
index 587e4afaa..000000000
--- a/pkg/sentry/fs/ext4/disklayout/superblock_32.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 disklayout
-
-// SuperBlock32Bit implements SuperBlock and represents the 32-bit version of
-// the ext4_super_block struct in fs/ext4/ext4.h.
-type SuperBlock32Bit struct {
-	// We embed the old superblock struct here because the 32-bit version is just
-	// an extension of the old version.
-	SuperBlockOld
-
-	FirstInode         uint32
-	InodeSizeRaw       uint16
-	BlockGroupNumber   uint16
-	FeatureCompat      uint32
-	FeatureIncompat    uint32
-	FeatureRoCompat    uint32
-	UUID               [16]byte
-	VolumeName         [16]byte
-	LastMounted        [64]byte
-	AlgoUsageBitmap    uint32
-	PreallocBlocks     uint8
-	PreallocDirBlocks  uint8
-	ReservedGdtBlocks  uint16
-	JournalUUID        [16]byte
-	JournalInum        uint32
-	JournalDev         uint32
-	LastOrphan         uint32
-	HashSeed           [4]uint32
-	DefaultHashVersion uint8
-	JnlBackupType      uint8
-	BgDescSizeRaw      uint16
-	DefaultMountOpts   uint32
-	FirstMetaBg        uint32
-	MkfsTime           uint32
-	JnlBlocks          [17]uint32
-}
-
-// Compiles only if SuperBlock32Bit implements SuperBlock.
-var _ SuperBlock = (*SuperBlock32Bit)(nil)
-
-// Only override methods which change based on the additional fields above.
-// Not overriding SuperBlock.BgDescSize because it would still return 32 here.
-
-// InodeSize implements SuperBlock.InodeSize.
-func (sb *SuperBlock32Bit) InodeSize() uint16 {
-	return sb.InodeSizeRaw
-}
-
-// CompatibleFeatures implements SuperBlock.CompatibleFeatures.
-func (sb *SuperBlock32Bit) CompatibleFeatures() CompatFeatures {
-	return CompatFeaturesFromInt(sb.FeatureCompat)
-}
-
-// IncompatibleFeatures implements SuperBlock.IncompatibleFeatures.
-func (sb *SuperBlock32Bit) IncompatibleFeatures() IncompatFeatures {
-	return IncompatFeaturesFromInt(sb.FeatureIncompat)
-}
-
-// ReadOnlyCompatibleFeatures implements SuperBlock.ReadOnlyCompatibleFeatures.
-func (sb *SuperBlock32Bit) ReadOnlyCompatibleFeatures() RoCompatFeatures {
-	return RoCompatFeaturesFromInt(sb.FeatureRoCompat)
-}