wow

1 files changed, 0 insertions, 73 deletions

diff --git a/pkg/btrfs/io_device.go b/pkg/btrfs/io_device.go
deleted file mode 100644
index 042c9f2..0000000
--- a/pkg/btrfs/io_device.go
+++ /dev/null
@@ -1,73 +0,0 @@
-package btrfs
-
-import (
-	"fmt"
-	"os"
-)
-
-type Device struct {
-	*os.File
-}
-
-func (dev Device) Size() (PhysicalAddr, error) {
-	fi, err := dev.Stat()
-	if err != nil {
-		return 0, err
-	}
-	return PhysicalAddr(fi.Size()), nil
-}
-
-var superblockAddrs = []PhysicalAddr{
-	0x00_0001_0000, // 64KiB
-	0x00_0400_0000, // 64MiB
-	0x40_0000_0000, // 256GiB
-}
-
-func (dev *Device) ReadAt(dat []byte, paddr PhysicalAddr) (int, error) {
-	return dev.File.ReadAt(dat, int64(paddr))
-}
-
-func (dev *Device) Superblocks() ([]Ref[PhysicalAddr, Superblock], error) {
-	const superblockSize = 0x1000
-
-	sz, err := dev.Size()
-	if err != nil {
-		return nil, err
-	}
-
-	var ret []Ref[PhysicalAddr, Superblock]
-	for i, addr := range superblockAddrs {
-		if addr+superblockSize <= sz {
-			superblock := Ref[PhysicalAddr, Superblock]{
-				File: dev,
-				Addr: addr,
-			}
-			if err := superblock.Read(); err != nil {
-				return nil, fmt.Errorf("superblock %d: %w", i, err)
-			}
-			ret = append(ret, superblock)
-		}
-	}
-	if len(ret) == 0 {
-		return nil, fmt.Errorf("no superblocks")
-	}
-	return ret, nil
-}
-
-func (dev *Device) Superblock() (ret Ref[PhysicalAddr, Superblock], err error) {
-	sbs, err := dev.Superblocks()
-	if err != nil {
-		return ret, err
-	}
-	for i, sb := range sbs {
-		if err := sb.Data.ValidateChecksum(); err != nil {
-			return ret, fmt.Errorf("superblock %d: %w", i, err)
-		}
-		if i > 0 {
-			if !sb.Data.Equal(sbs[0].Data) {
-				return ret, fmt.Errorf("superblock %d and superblock %d disagree", 0, i)
-			}
-		}
-	}
-	return sbs[0], nil
-}