cdfs(5cdfs)															       cdfs(5cdfs)

Name
       cdfs - The CD-ROM (Compact Disc Read Only Memory) File System

Description
       The  ISO  9660 standard describes volume and file structures for information exchange on CD-ROM's. CDFS supports mounting, as another local
       file system type, CD-ROM's which comply to the standard. Once mounted, files and directories recorded on the CD-ROM become accessible in  a
       read-only manner through system calls and commands. Support of the standard is limited to level 2 interchange with the exeception of multi-
       ple volume semantics, according to ISO 9660.  Refer to the international standard ISO 9660-1988 for addtional information pertaining to the
       actual standard.

       The  file  system behaves the same as any read-only file system, and additionally supports the following semantics.  The can be exported by
       NFS, and supports users being able to mount other file system types (UFS, NFS, CDFS) onto directories recorded on the CDFS volume.  Volumes
       recorded  in  ISO  9660-1988  (interchange  level 2) or High Sierra Group (HSG) format are supported. The data of a mounted volume which is
       recorded as part of a multiple volume set or consists of a single volume set is made available.	Both local and remote  execution  is  sup-
       ported for non-interleaved files. Data contained in files recorded in interleave mode and non-interleave mode is available through read(2).
       If demand page execution of interleaved files is required, the user can either copy the file to magnetic storage, or execute the file  over
       NFS.

       Since is a configurable kernel option, the following two lines must exist in the systems configuration file:

	  options CDFS

	  pseudo-device    cdfs

       If the system configuration does not contain the above lines, refer to the Guide to Configuration File Maintenance for a detailed explaina-
       tion of how to modify the configuration file and rebuild a kernel.

See Also
       mount(8cdfs)

																       cdfs(5cdfs)