You need read permission on the mount point
to read the current settings.
You must have appropriate permissions to change
administrative CD-ROM features.
Change the default features after the CD-ROM has been mounted,
but before any CD-ROM access occurs or that change
may not be consistently visible.
-c-
Use file names as they are recorded on the CD-ROM.
This option cannot be used with the -m or -l options.
-D mode-
Sets the default permissions for directories the same way as with
the -F option.
-F mode-
Sets the default permission for files. Specify mode
either as symbolic or absolute.
An absolute mode is a bit-wise inclusive OR of zero
or more of the following octal values:
0400-
Read by owner.
0100-
Execute by owner.
0040-
Read by group.
0010-
Execute by group.
0004-
Read by others.
0001-
Execute by others.
A symbolic mode has the form:
[who] op [permission]
who is a combination of the letters;
u (user), g (group), and o (other).
a stands for ugo.
op is one of these symbols:
+-
adds permission to the file's mode
--
removes permission
=-
assigns permission absolutely (all other bits are reset).
permission is a combination of the letters
r (read), and x (execute).
Omitting permission is only useful when used
with = to take away all permission.
-g group-
Sets the default group of files and directories, where
group is a group ID or a valid group name.
-G gmfile-
Specifies a file that maps default group IDs on CD-ROM files and
directories to group IDs or group names on the file system
on which the CD-ROM is mounted.
The files and directories on the CD-ROM must have an unrestricted final XAR.
Entries in gmfile must have the following syntax:
value of group ID on CD-ROM, a colon (:), value of group ID
or group name.
Multiple entries must be separated by a newline character.
The sys/cdrom.h header file defines the maximum
number of mappings allowed in gmfile (CD_MAXGMAP).
-u owner-
Sets the default ownership of files and directories, where
owner is a user ID or a valid login name.
-U umfile-
Specifies a file that maps default user IDs on CD-ROM files and
directories to user IDs or user names on the file system
on which the CD-ROM is mounted.
The files and directories on the CD-ROM must have an unrestricted final XAR.
Entries in umfile must have the following syntax:
value of user ID on CD-ROM, a colon (:), value of user ID
or user name.
Multiple entries must be separated by a newline character.
The sys/cdrom.h header file defines the maximum
number of mappings allowed in umfile (CD_MAXUMAP).
-l-
Convert upper case characters in File or Directory
Identifiers to lower case. If the
File Identifier does not contain a File Name Extension,
do not display the period separator.
(.) is not represented.
This option can be used with the -m option.
-m-
Do not display the Version Number and semicolon separator (;)
of File or Directory Identifiers on CD-ROM.
This option can be used with the -l option.
-s-
Grants search permission for directories
on which the searcher has read or execute permission.
-x-
Grants search permission for directories
on which the searcher has execute permission.