( ) , . , . ( (, , , ), (, , )). , . . , ( ).
. 1. . 2. . 3. . 4. (), ( ).
, . , , . , , .
. , , , , . (protection domain) , . , <object-name, rights-set>. , . , D <file F, (read, write)>, , , D, F, (. 8.1).
/ | F1 | F2 | F3 | Printer |
D1 | Read | execute | ||
D2 | read | |||
D3 | ||||
D4 | read write | read write |
. 8.1.
, , : 1) . , , ;2) . ;3) . , . , (. . 8.1), . , . , . ( ), . , . . . , ACL (access control list). (capability list, capability tickets).
|
|
ACL. . <domain, rights-set>, . . , (capability list). . , . ; .
( ) . , , .