/usr/include/x86_64-linux-gnu/eckit/io/ is in libodb-api-dev 0.17.6-2build1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/x86_64-linux-gnu/eckit/io/AIOHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/Base64.h
/usr/include/x86_64-linux-gnu/eckit/io/BitIO.h
/usr/include/x86_64-linux-gnu/eckit/io/Buffer.h
/usr/include/x86_64-linux-gnu/eckit/io/BufferCache.h
/usr/include/x86_64-linux-gnu/eckit/io/BufferedHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/CircularBuffer.h
/usr/include/x86_64-linux-gnu/eckit/io/CommandStream.h
/usr/include/x86_64-linux-gnu/eckit/io/Compress.h
/usr/include/x86_64-linux-gnu/eckit/io/DataBlob.h
/usr/include/x86_64-linux-gnu/eckit/io/DataHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/DblBuffer.h
/usr/include/x86_64-linux-gnu/eckit/io/EasyCURL.h
/usr/include/x86_64-linux-gnu/eckit/io/EmptyHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/FTPHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/FileBase.cc
/usr/include/x86_64-linux-gnu/eckit/io/FileBase.h
/usr/include/x86_64-linux-gnu/eckit/io/FileDescHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/FileHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/FileLock.h
/usr/include/x86_64-linux-gnu/eckit/io/FileLocker.h
/usr/include/x86_64-linux-gnu/eckit/io/FilePool.h
/usr/include/x86_64-linux-gnu/eckit/io/HandleBuf.h
/usr/include/x86_64-linux-gnu/eckit/io/HandleHolder.h
/usr/include/x86_64-linux-gnu/eckit/io/Length.b
/usr/include/x86_64-linux-gnu/eckit/io/Length.h
/usr/include/x86_64-linux-gnu/eckit/io/MarsFSHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/MarsFSPartHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/MemoryHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/MoverHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/MoverTransfer.h
/usr/include/x86_64-linux-gnu/eckit/io/MultiHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/MultiPartHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/Offset.b
/usr/include/x86_64-linux-gnu/eckit/io/Offset.h
/usr/include/x86_64-linux-gnu/eckit/io/PartFileHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/PartHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/PipeHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/Pipeline.h
/usr/include/x86_64-linux-gnu/eckit/io/RawFileHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/ResizableBuffer.h
/usr/include/x86_64-linux-gnu/eckit/io/Select.h
/usr/include/x86_64-linux-gnu/eckit/io/SharedBuffer.h
/usr/include/x86_64-linux-gnu/eckit/io/SharedHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/SockBuf.h
/usr/include/x86_64-linux-gnu/eckit/io/StatsHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/StdFile.h
/usr/include/x86_64-linux-gnu/eckit/io/StdFileHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/StdPipe.h
/usr/include/x86_64-linux-gnu/eckit/io/StdioBuf.h
/usr/include/x86_64-linux-gnu/eckit/io/TCPHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/TCPSocketHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/TeeHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/TransferWatcher.h
/usr/include/x86_64-linux-gnu/eckit/io/URLHandle.h
/usr/include/x86_64-linux-gnu/eckit/io/cluster/
/usr/include/x86_64-linux-gnu/eckit/io/cluster/ClusterDisks.h
/usr/include/x86_64-linux-gnu/eckit/io/cluster/ClusterNode.h
/usr/include/x86_64-linux-gnu/eckit/io/cluster/ClusterNodes.h
/usr/include/x86_64-linux-gnu/eckit/io/cluster/NodeInfo.h