Name
__copy_to_user —
Copy a block of data into user space, with less checking.
Synopsis
unsigned long __must_check __copy_to_user ( | void __user * to, |
| | const void * from, |
| | unsigned long 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. Caller must check
the specified block with access_ok before calling this function.
Returns number of bytes that could not be copied.
On success, this will be zero.