diff options
| author | Luke Shumaker <lukeshu@lukeshu.com> | 2022-06-05 16:46:34 -0600 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@lukeshu.com> | 2022-06-05 16:46:34 -0600 |
| commit | 74b109b0a75ae6648f9381252d8beb5ce6025df3 (patch) | |
| tree | 64b8b2250c67f749566761bab56676bed9c33846 /pkg/btrfs/io1_device.go | |
| parent | e134a9fbd0d8ae43e2d24c5aabad8bf6a16190ed (diff) | |
factor out a btrfsmisc pacage
Diffstat (limited to 'pkg/btrfs/io1_device.go')
| -rw-r--r-- | pkg/btrfs/io1_device.go | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/pkg/btrfs/io1_device.go b/pkg/btrfs/io1_device.go index efd8cb9..55b7525 100644 --- a/pkg/btrfs/io1_device.go +++ b/pkg/btrfs/io1_device.go @@ -4,6 +4,7 @@ import ( "fmt" "os" + "lukeshu.com/btrfs-tools/pkg/binstruct" "lukeshu.com/btrfs-tools/pkg/util" ) @@ -19,7 +20,7 @@ func (dev Device) Size() (PhysicalAddr, error) { return PhysicalAddr(fi.Size()), nil } -var superblockAddrs = []PhysicalAddr{ +var SuperblockAddrs = []PhysicalAddr{ 0x00_0001_0000, // 64KiB 0x00_0400_0000, // 64MiB 0x40_0000_0000, // 256GiB @@ -30,7 +31,7 @@ func (dev *Device) ReadAt(dat []byte, paddr PhysicalAddr) (int, error) { } func (dev *Device) Superblocks() ([]util.Ref[PhysicalAddr, Superblock], error) { - const superblockSize = 0x1000 + superblockSize := PhysicalAddr(binstruct.StaticSize(Superblock{})) sz, err := dev.Size() if err != nil { @@ -38,7 +39,7 @@ func (dev *Device) Superblocks() ([]util.Ref[PhysicalAddr, Superblock], error) { } var ret []util.Ref[PhysicalAddr, Superblock] - for i, addr := range superblockAddrs { + for i, addr := range SuperblockAddrs { if addr+superblockSize <= sz { superblock := util.Ref[PhysicalAddr, Superblock]{ File: dev, |