Technical data

Managing Storage Media
9.4 Protecting Volumes
Table 9–10 (Cont.) INITIALIZE Command Qualifiers for Protection
Qualifier Explanation
/GROUP System, owner, and group processes have read, write, create, and
delete access to the volume. World users have no access.
/NOSHARE System and owner processes have read, write, and delete access to
the volume. World users have no access. Group users also have no
access unless you specify the /GROUP qualifier.
Note
The /SYSTEM qualifier grants all users complete access. However, users
cannot create directories or files unless you perform one of the following
actions:
• Change the protection on the newly created master file directory
(MFD), [000000]000000.DIR;1 to allow users to create their own
directories under this parent directory.
• Under the master file directory, create user directories that give
users write access so that they, in turn, can create their own
directories.
System managers usually choose the second method.
Table 9–11 shows the UIC and protection that the system sets for disk volumes
when you use the default, /SHARE, and other qualifiers with the INITIALIZE
command.
Table 9–11 Protection Granted with INITIALIZE Command Qualifiers
Qualifier UIC Protection
/SYSTEM [1,1] S:RWCD,O:RWCD,G:RWCD,W:RWCD
/SYSTEM/NOSHARE [1,1] S:RWCD,O:RWCD,G:RWCD,W:RWCD
/GROUP [x,0] S:RWCD,O:RWCD,G:RWCD,W
/SHARE (the default) [x,x]
1
S:RWCD,O:RWCD,G:RWCD,W:RWCD
/NOSHARE [x,x]
1
S:RWCD,O:RWCD,G,W
1
x,x is the UIC of the process that performs the initialization.
Specifying ISO 9660-Formatted Media Protection
The OpenVMS implementation of ISO 9660 does not include volume or volume set
protection. The protection specified for the device on which the media is mounted
determines accessibility to the ISO 9660 volumes or volume sets.
By default, the device protection is assigned to ISO 9660 files and directories.
When you mount the volume, you can specify additional file protection using
the UIC and PERMISSION protection fields included in the Extended Attribute
Records (XARs) that might be associated with each file.
9–24 Managing Storage Media