diff options
| -rw-r--r-- | src/pkg/archive/tar/reader.go | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/src/pkg/archive/tar/reader.go b/src/pkg/archive/tar/reader.go index 920a9b08f..a27559d0f 100644 --- a/src/pkg/archive/tar/reader.go +++ b/src/pkg/archive/tar/reader.go @@ -29,10 +29,11 @@ const maxNanoSecondIntSize = 9 // The Next method advances to the next file in the archive (including the first), // and then it can be treated as an io.Reader to access the file's data. type Reader struct { - r io.Reader - err error - pad int64 // amount of padding (ignored) after current file entry - curr numBytesReader // reader for current file entry + r io.Reader + err error + pad int64 // amount of padding (ignored) after current file entry + curr numBytesReader // reader for current file entry + hdrBuff [blockSize]byte // buffer to use in readHeader } // A numBytesReader is an io.Reader with a numBytes method, returning the number @@ -426,7 +427,9 @@ func (tr *Reader) verifyChecksum(header []byte) bool { } func (tr *Reader) readHeader() *Header { - header := make([]byte, blockSize) + header := tr.hdrBuff[:] + copy(header, zeroBlock) + if _, tr.err = io.ReadFull(tr.r, header); tr.err != nil { return nil } |