From 01704502c27f6247523f4d227c94f9311ec4acb4 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Wed, 25 May 2022 12:18:03 -0600 Subject: wip --- pkg/btrfs/io_ref.go | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'pkg/btrfs/io_ref.go') diff --git a/pkg/btrfs/io_ref.go b/pkg/btrfs/io_ref.go index aa37fee..a91b691 100644 --- a/pkg/btrfs/io_ref.go +++ b/pkg/btrfs/io_ref.go @@ -4,19 +4,25 @@ import ( "lukeshu.com/btrfs-tools/pkg/binstruct" ) -type Ref[T any] struct { - dev *Device - addr int64 +type File[A ~int64] interface { + Name() string + Size() (A, error) + ReadAt(p []byte, off A) (n int, err error) +} + +type Ref[A ~int64, T any] struct { + File File[A] + Addr A Data T } -func (r *Ref[T]) Read() error { +func (r *Ref[A, 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 { + if _, err := r.File.ReadAt(buf, r.Addr); err != nil { return err } return binstruct.Unmarshal(buf, &r.Data) -- cgit v1.2.3-2-g168b