diff options
Diffstat (limited to 'commitgraph/read/layer_open.go')
| -rw-r--r-- | commitgraph/read/layer_open.go | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/commitgraph/read/layer_open.go b/commitgraph/read/layer_open.go deleted file mode 100644 index 3ecd4672..00000000 --- a/commitgraph/read/layer_open.go +++ /dev/null @@ -1,81 +0,0 @@ -package read - -import ( - "os" - "syscall" - - "codeberg.org/lindenii/furgit/commitgraph" - "codeberg.org/lindenii/furgit/internal/intconv" - objectid "codeberg.org/lindenii/furgit/object/id" -) - -func openLayer(root *os.Root, relPath string, algo objectid.Algorithm) (*layer, error) { - file, err := root.Open(relPath) - if err != nil { - return nil, err - } - - info, err := file.Stat() - if err != nil { - _ = file.Close() - - return nil, err - } - - size := info.Size() - if size < int64(commitgraph.HeaderSize+commitgraph.FanoutSize+algo.Size()) { - _ = file.Close() - - return nil, &MalformedError{Path: relPath, Reason: "file too short"} - } - - mapLen, err := intconv.Int64ToUint64(size) - if err != nil { - _ = file.Close() - - return nil, err - } - - mapLenInt, err := intconv.Uint64ToInt(mapLen) - if err != nil { - _ = file.Close() - - return nil, err - } - - fd, err := intconv.UintptrToInt(file.Fd()) - if err != nil { - _ = file.Close() - - return nil, err - } - - data, err := syscall.Mmap(fd, 0, mapLenInt, syscall.PROT_READ, syscall.MAP_PRIVATE) - if err != nil { - _ = file.Close() - - return nil, err - } - - out := &layer{ - path: relPath, - file: file, - data: data, - } - - parseErr := parseLayer(out, algo) - if parseErr != nil { - _ = out.close() - - return nil, parseErr - } - - verifyErr := verifyTrailerHash(out.data, algo, relPath) - if verifyErr != nil { - _ = out.close() - - return nil, verifyErr - } - - return out, nil -} |
