Name
_copy_to_user — 
     Copy a block of data into user space.
 
Synopsis
| unsigned long _copy_to_user ( | void __user * to, | 
|  | const void * from, | 
|  | unsigned n ); | 
 
Arguments
- to
- 
     Destination address, in user space.
     
- from
- 
     Source address, in kernel space.
     
- n
- 
     Number of bytes to copy.
     
Context
   User context only.  This function may sleep.
Description
   Copy data from kernel space to user space.
   
   Returns number of bytes that could not be copied.
   On success, this will be zero.