CD-ROM filesystem

QNX Neutrino's CD-ROM filesystem provides transparent access to CD-ROM media, so you can treat CD-ROM filesystems as though they were POSIX filesystems. This transparency lets processes operate on CD-ROM files without any special knowledge or work on their part.

The shared object provides filesystem support for the ISO 9660 standard as well as a number of extensions, including Rock Ridge (RRIP), Joliet (Microsoft), and multisession (Kodak Photo CD, enhanced audio). This shared object is automatically loaded by the devb-* drivers when mounting an ISO-9660 filesystem.

The CD-ROM filesystem accepts any characters that it sees in a filename; it's read-only, so it's up to whatever prepares the CD image to impose appropriate restrictions. Strict adherence to ISO 9660 allows only 0-9A-Z_, but Joliet and Rockridge are far more lenient.

For information about burning CDs, see Backing Up and Recovering Data.

Note: We've deprecated in favor of, which now supports ISO-9660 filesystems in addition to UDF. For information about UDF, see "Universal Disk Format (UDF) filesystem," later in this chapter.