libext2fs-wii is a port of the libext2fs driver to the Nintendo GameCube/Wii, modeled on the libntfs interface.
Features
EXT2/EXT3/EXT4 file systems support
Full read/write, files of any size can be created, modified, renamed, moved, or deleted.
Compression, read/write support for compressed files
Symbolic link and directory junction walking
Journaling system http://wiibrew.org/wiki/Libext2fs