linkerfs is a read-only filesystem based on FUSE, designed to remap any part of files to anywhere in the target file.

linkerfs <warp point> <mount_point>

warp point must be a directory, and it is the directory that linkerfs will process.

linkerfs will passthrough the data and structure included in warp point to mount point except special files (see details in How it works).

If you are using samba, the option -o allow_other is needed.

libfuse - 2.9.9 lower version maybe works as well.

Operating System: 64-bit Linux (32-bit may also work, but be cautious with size_t and off_t, smaller value may be helpful).

CPU: Little Endian

linkerfs creates a read-only file system as mirror of warp point.

linkerfs will remap data according configuration, when meeting the special file called warp file(format is below).

linkerfs only modify the file content, file name will leave it as it is .

Notice: the Byte-Order may different between CPUs.

Includes the basic information of target mapping. Its length is 32(decimal).

This area is made up of sequential part. Its length equals the number of parts * 24 (decimal). Every part declares the path from which to read data, the offset to seek before reading, and the size to read. The final data sequence is the same as the part sequence.

Each part like this:

Includes ASCII characters, possibly located anywhere except the header and parts info area. Typically, it follows the Parts info.