Name
__copy_to_user —
Copy a block of data into user space, with less checking.
Synopsis
unsigned long __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 if pagefaults are
enabled.
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.