diff options
Diffstat (limited to 'lib/btrfsprogs/btrfsinspect/scanforextents/csum.go')
| -rw-r--r-- | lib/btrfsprogs/btrfsinspect/scanforextents/csum.go | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/btrfsprogs/btrfsinspect/scanforextents/csum.go b/lib/btrfsprogs/btrfsinspect/scanforextents/csum.go index 7944497..ec46833 100644 --- a/lib/btrfsprogs/btrfsinspect/scanforextents/csum.go +++ b/lib/btrfsprogs/btrfsinspect/scanforextents/csum.go @@ -100,7 +100,7 @@ func readCSumTree(ctx context.Context, fs btrfs.Trees) map[shortSum][]btrfsvol.L return sum2laddrs } -func LookupCSum(fs btrfs.Trees, alg btrfssum.CSumType, laddr btrfsvol.LogicalAddr) (btrfssum.CSum, error) { +func LookupCSum(fs btrfs.Trees, alg btrfssum.CSumType, laddr btrfsvol.LogicalAddr) (map[btrfsvol.LogicalAddr]btrfssum.CSum, error) { item, err := fs.TreeSearch(btrfs.CSUM_TREE_OBJECTID, func(key btrfs.Key, size uint32) int { itemBeg := btrfsvol.LogicalAddr(key.ObjectID) numSums := int64(size) / int64(alg.Size()) @@ -115,11 +115,15 @@ func LookupCSum(fs btrfs.Trees, alg btrfssum.CSumType, laddr btrfsvol.LogicalAdd } }) if err != nil { - return btrfssum.CSum{}, err + return nil, err } body, ok := item.Body.(btrfsitem.ExtentCSum) if !ok { - return btrfssum.CSum{}, fmt.Errorf("item body is %T not ExtentCSum", item.Body) + return nil, fmt.Errorf("item body is %T not ExtentCSum", item.Body) + } + ret := make(map[btrfsvol.LogicalAddr]btrfssum.CSum, len(body.Sums)) + for i, sum := range body.Sums { + ret[btrfsvol.LogicalAddr(item.Key.ObjectID)+(btrfsvol.LogicalAddr(i)*csumBlockSize)] = sum } - return body.Sums[int(laddr-btrfsvol.LogicalAddr(item.Key.ObjectID))/csumBlockSize], nil + return ret, nil } |