diff options
| author | Luke Shumaker <lukeshu@lukeshu.com> | 2022-05-24 21:53:28 -0600 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@lukeshu.com> | 2022-05-24 21:53:28 -0600 |
| commit | 23ab1f8be6a1f4b5ce01e05f8ed3f6b5dae30d0b (patch) | |
| tree | 854801aa60dd204cd390c40f7cafb326e981014f /pkg/btrfs/io_ref.go | |
| parent | b0dd4d1f0c8262e3680570d529d00c9ebead1a91 (diff) | |
stuff
Diffstat (limited to 'pkg/btrfs/io_ref.go')
| -rw-r--r-- | pkg/btrfs/io_ref.go | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/pkg/btrfs/io_ref.go b/pkg/btrfs/io_ref.go new file mode 100644 index 0000000..aa37fee --- /dev/null +++ b/pkg/btrfs/io_ref.go @@ -0,0 +1,23 @@ +package btrfs + +import ( + "lukeshu.com/btrfs-tools/pkg/binstruct" +) + +type Ref[T any] struct { + dev *Device + addr int64 + Data T +} + +func (r *Ref[T]) Read() error { + size, err := binstruct.Size(r.Data) + if err != nil { + return err + } + buf := make([]byte, size) + if _, err := r.dev.ReadAt(buf, r.addr); err != nil { + return err + } + return binstruct.Unmarshal(buf, &r.Data) +} |