Rock Ridge Interchange Protocol

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The Rock Ridge Interchange Protocol (also Rock Ridge or Rock Ridge CD Extension is) an extension of the ISO 9660 - CD-ROM - file system for Unix derivatives, and builds on the System Use Sharing Protocol (SUSP, IEEE p1281) on.

In addition to the ISO9660 file system, the RockRidge file system manages the Unix-typical Unix file rights , file owner and group, inode number (for hard links), link count and symbolic links . In addition, file names with a length of up to 255 characters are supported. All characters with the exception of '/' and the character NUL ('\ 0') are possible, the directory structure can have any depth. In contrast to the Joliet standard from Microsoft , the additional metadata is stored within the normal ISO-9660 file structure.

There is also an extension by Amiga from RockRidge. This was used by some burning programs under AmigaOS to save the Amiga-typical file rights on CD. However, since the AmigaOS was not designed as a multi-user system, the users were ignored.

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