1 03/11/85  extended_acls
 2 
 3 Extended access control terms are part of standard Multics Access
 4 Control Lists (ACLs).  They are used by subsystems to control access
 5 to protected entries.  For instance, a Multics mailbox has extended
 6 modes such as append, delete, and read associated with them.
 7 
 8 You can list, modify, and delete extended ACLs with the list_acl,
 9 set_acl, and delete_acl commands.  These commands operate on storage
10 system entries that use extended entries by using the fs_util_
11 subroutine, which is part of the Multics extended entry software.
12 (See extended_entries.gi.)
13 
14 
15 To protect against accidental application of improper extended ACL
16 modes to extended entries, set_acl doesn't operate on extended entries
17 if you specify the starname "**" or a starname whose last component
18 contains a "*" or "?".  This protects against having the command "sa
19 ** r *.*" give all users only r extended access to a mailbox.