Variants
Amiga Rock Ridge is similar to RRIP, except it provides additional properties used by the Amiga operating system. It too is built on the SUSP standard by defining an "AS"-tagged system use field. Thus both Amiga Rock Ridge and the POSIX RRIP may be used simultaneously on the same volume.
Some of the specific properties supported by this extension are the additional Amiga-bits for files. There is support for attribute "P" that stands for "pure" bit (indicating re-entrant command) and attribute "S" for script bit (indicating batch file). This includes the protection flags plus an optional comment field. These extensions were introduced by Angela Schmidt with the help of Andrew Young, the primary author of the Rock Ridge Interchange Protocol and System Use Sharing Protocol. The Amiga extensions are recognized by Amiga program MasterISO, and should also be recognized by MakeCD and Frying Pan, but the support by latter two programs is uncredited.
Amiga filesystems supporting the extensions are AmiCDFS, AsimCDFS and CacheCDFS.
Users who want to access comments and protection bits of their Amiga files present on CDs could simply mount some new logical units associated to the same physical unit, but using Amiga CacheCDFS as filesystem.
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