VOLPRO
VOLPRO is a privilege in the Objects group that allows the user to perform various operations on volumes.
The VOLPRO privilege lets the user's process:
- Initialize a previously used volume with an owner UIC different from the user's own UIC
- Override the expiration date on a tape or disk volume owned by another user
- Use the /FOREIGN qualifier to mount a Files-11 volume owned by another user
- Override the owner UIC protection of a volume
The VOLPRO privilege permits control only over volumes that the user's process can mount or initialize. Volumes mounted with the /SYSTEM qualifier are safe from a process with the VOLPRO privilege as long as the process does not also have the SYSNAM privilege.
Exercise extreme caution when granting the VOLPRO privilege. If unqualified users can override volume protection, the operating system and service to others can be disrupted. Such disruptions can include destruction of the database and exposure of confidential information.
The VOLPRO privilege lets a process perform the following tasks:
| Task | Interface |
|---|---|
| Dismount a volume | DISMOUNT/ABORT, $DISMOU |
| Initialize a volume | $INIT_VOL |
| Mount foreign multivolume magnetic tape set | MOUNT/MULTI_VOLUME |
| Override volume labels or accessibility | $MOUNT |
| Initialize blank tape | REPLY/BLANK_TAPE, $SNDOPR |
| Override access while initializing a magnetic tape after a file access error | $INIT_VOL |
| Override write-locking of volume on errors | $MOUNT |
| Override write protection of former shadow set member | $MOUNT |
| Override volume expiration, protection, or ownership | $MOUNT |
