NAME
mount_cd9660 —
mount an ISO-9660 file
system
SYNOPSIS
mount_cd9660 |
[-o
options] special
node |
DESCRIPTION
The
mount_cd9660 command attaches the ISO-9660 file system
residing on the device
special to the global file system
namespace at the location indicated by
node. Both
special and
node are converted to
absolute paths before use.
The options are as follows:
-
-
- -o
- Options are specified with a -o flag
followed by a comma separated string of options. Besides options mentioned
in mount(8) man page,
following cd9660-specific options are supported:
-
-
- extatt
- Enable the use of extended attributes.
-
-
- gens
- Do not strip version numbers on files and leave the
case of the filename alone. (By default, uppercase characters are
translated to lowercase, and if there are files with different version
numbers on the disk, only the last one will be listed.)
In either case, files may be opened without giving a version number, in
which case you get the last one, or by explicitly stating a version
number (albeit it's quite difficult to know it, if you are not using
the gens option), in which case you get the
specified version.
-
-
- nocasetrans
- A synonym for nomaplcase.
-
-
- nojoliet
- Do not make use of Joliet extensions for long filenames
which may be present in the file system.
Interpretation of Joliet extensions is enabled by default, Unicode file
names are encoded into UTF-8.
-
-
- nomaplcase
- File names on cd9660 cdrom without Rock Ridge extension
present should be uppercase only. By default, cd9660 recodes file
names read from a non-Rock Ridge disk to all lowercase characters.
nomaplcase turns off this mapping.
-
-
- norrip
- Do not use any Rockridge extensions included in the
file system.
-
-
- nrr
- Same as norrip. For compatibility
with Solaris only.
-
-
- rrcaseins
- Makes all lookups case-insensitive even for CD-ROMs
with Rock-Ridge extensions (for Rock-Ridge, default is case-sensitive
lookup).
For compatibility with previous releases, following obsolete flags are still
recognized:
-
-
- -e
- Same as -o extatt.
-
-
- -j
- Same as -o
nojoliet.
-
-
- -g
- Same as -o gens.
-
-
- -r
- Same as -o norrip.
SEE ALSO
mount(2),
unmount(2),
fstab(5),
mount(8),
mscdlabel(8)
HISTORY
The
mount_cd9660 utility first appeared
4.4BSD. Support for Joliet file system appeared in
NetBSD 1.4. Options
nomaplcase and
rrcaseins were added in
NetBSD 1.5.
UTF-8 encoding of Unicode file names for Joliet file systems was added in
NetBSD 3.0.
NOTES
For Joliet file systems, the Unicode file names used to be filtered to
ISO-8859-1 character set. This changed in
NetBSD 3.0,
file names are encoded into UTF-8 now by default. The behaviour is
controllable by the
vfs.cd9660.utf8_joliet sysctl; the
former behaviour is available by setting it to 0.
BUGS
For some cdroms the information in the Rock Ridge extension is wrong and the
cdrom needs to be mounted with "norrip". A sign that something is
wrong is that the
stat(2) system
call returns
EBADF
causing, e.g., "ls -l" to
fail with "Bad file descriptor".
The cd9660 file system does not support the original "High Sierra"
("CDROM001") format.
POSIX device node mapping is currently not supported.
Version numbers are not stripped if Rockridge extensions are in use. In this
case, you have to use the original name of the file as recorded on disk, i.e.
use uppercase and append the version number to the file.
There is no ECMA support.