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cdfs(4)
NAME
  cdfs - The Compact Disk-Read Only Memory File System (CDFS)

DESCRIPTION
  The ISO 9660 standard describes volume and file structures for information
  exchange on a Compact Disk-Read Only Memory (CD-ROM) volume.	CDFS supports
  mounting, as another local file system type, CD-ROMs that 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 Interchange Level 2 with the exception of
  multiple volume semantics, which are supported.  Refer to the international
  standard ISO 9660-1988 for additional information pertaining to the actual
  standard.

  The CDFS behaves the same as any read-only file system, and additionally
  supports the following semantics:

    ·  The CDFS can be exported by NFS

    ·  Users can mount other file system types (UFS, NFS, AdvFS) onto
       directories recorded on a CD-ROM volume

    ·  CD-ROM volumes can be recorded in ISO 9660-1988, Interchange level 2,
       or (for backward compatibility) High Sierra Group (HSG) format

    ·  The data on a CD-ROM volume that is recorded as part of a multiple
       volume set or consists of a single volume is made available when the
       volume is mounted

    ·  File systems on a CD-ROM volume can be accessed locally and remotely

    ·  The CDFS can be organized on a CD-ROM volume in multiple sessions.
       The contents of all sessions is available as one file system;
       individual sessions are not separately available.

  The CDFS also supports CD-ROMs recorded using the Rock Ridge Interchange
  Protocol, Revision 1.09, August 1991.	 Rock Ridge specifies the use of the
  extension fields that are defined by ISO-9660:1988, and it uses those
  extensions to provide the following information:

    ·  File owner, file group, file permissions

    ·  Additional file types (symbolic links, device special files, named
       pipes)

    ·  setuid, setgid, and sticky bits

    ·  Hard link counts

    ·  POSIX file names (mixed case names, unstructured names, and longer
       names than ISO-9660:1988 allows)

    ·  Deep directory hierarchies (greater than 8 levels)

    ·  File time stamps

  Refer to the Rock Ridge specification for additional information about the
  extensions.

  The CDFS also supports the XCDR extensions (X/Open Preliminary
  Specification (1991) CD-ROM Support Component).  These XCDR extensions add
  the following support:

    ·  Users can examine selected ISO 9660 attributes through defined
       utilities and shared libraries

    ·  A system administrator can substitute different file protections,
       owners, and file names for files on a CD-ROM volume.

RELATED INFORMATION
  mount(8), cddevsuppl(8), cdsuf(1), cd_getdevmap(3), cd_setdevmap(3), and
  cd_suf(3)

Index for Section 4

Alphabetical listing for C

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