COPY_TO_USER
Section: Memory Management in Linux (9)
Updated: February 2011
Index
Return to Main Contents
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 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.
Returns number of bytes that could not be copied. On success, this will be zero.
COPYRIGHT