        ,  
. ,      ,  , -
    ,    !   
    ,      , -
 ,   .     ,
   ,     .

*        . ,
          .

*          -
.  ,       
.

*         .   -
      . ,   
     .

        
       .  , 
          !
       .

       copy_to_user ().
   :      -
;      ;   ,  -
 ,  .

       copy_from_user (),
   copy_to_user ().    , 
   ,   ,    -
 ,     .

     ,     -
   .      .
         -
 -EFAULT.

    ,   
copy from user ()  copy to user ().   silly copyO 
  .        -
  .    ,     -
       .   
   .

/*

*   silly_copy    ,

*   1    ,

*     src,   ,

*     dst,   

*     .    !

*/

asmlinkage long sys_silly_copy(unsigned long *src,
unsigned long *dst, unsigned long len)

102  5