linux/Documentation/filesystems/isofs.rst
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   1.. SPDX-License-Identifier: GPL-2.0
   2
   3==================
   4ISO9660 Filesystem
   5==================
   6
   7Mount options that are the same as for msdos and vfat partitions.
   8
   9  =========     ========================================================
  10  gid=nnn       All files in the partition will be in group nnn.
  11  uid=nnn       All files in the partition will be owned by user id nnn.
  12  umask=nnn     The permission mask (see umask(1)) for the partition.
  13  =========     ========================================================
  14
  15Mount options that are the same as vfat partitions. These are only useful
  16when using discs encoded using Microsoft's Joliet extensions.
  17
  18 ============== =============================================================
  19 iocharset=name Character set to use for converting from Unicode to
  20                ASCII.  Joliet filenames are stored in Unicode format, but
  21                Unix for the most part doesn't know how to deal with Unicode.
  22                There is also an option of doing UTF-8 translations with the
  23                utf8 option.
  24  utf8          Encode Unicode names in UTF-8 format. Default is no.
  25 ============== =============================================================
  26
  27Mount options unique to the isofs filesystem.
  28
  29 ================= ============================================================
  30  block=512        Set the block size for the disk to 512 bytes
  31  block=1024       Set the block size for the disk to 1024 bytes
  32  block=2048       Set the block size for the disk to 2048 bytes
  33  check=relaxed    Matches filenames with different cases
  34  check=strict     Matches only filenames with the exact same case
  35  cruft            Try to handle badly formatted CDs.
  36  map=off          Do not map non-Rock Ridge filenames to lower case
  37  map=normal       Map non-Rock Ridge filenames to lower case
  38  map=acorn        As map=normal but also apply Acorn extensions if present
  39  mode=xxx         Sets the permissions on files to xxx unless Rock Ridge
  40                   extensions set the permissions otherwise
  41  dmode=xxx        Sets the permissions on directories to xxx unless Rock Ridge
  42                   extensions set the permissions otherwise
  43  overriderockperm Set permissions on files and directories according to
  44                   'mode' and 'dmode' even though Rock Ridge extensions are
  45                   present.
  46  nojoliet         Ignore Joliet extensions if they are present.
  47  norock           Ignore Rock Ridge extensions if they are present.
  48  hide             Completely strip hidden files from the file system.
  49  showassoc        Show files marked with the 'associated' bit
  50  unhide           Deprecated; showing hidden files is now default;
  51                   If given, it is a synonym for 'showassoc' which will
  52                   recreate previous unhide behavior
  53  session=x        Select number of session on multisession CD
  54  sbsector=xxx     Session begins from sector xxx
  55 ================= ============================================================
  56
  57Recommended documents about ISO 9660 standard are located at:
  58
  59- http://www.y-adagio.com/
  60- ftp://ftp.ecma.ch/ecma-st/Ecma-119.pdf
  61
  62Quoting from the PDF "This 2nd Edition of Standard ECMA-119 is technically
  63identical with ISO 9660.", so it is a valid and gratis substitute of the
  64official ISO specification.
  65