__CLEAR_USER(9) Memory Management in Linux __CLEAR_USER(9)
NAME
__clear_user - Zero a block of memory in user space, with less checking.
SYNOPSIS
unsigned long __clear_user(void __user * to, unsigned long n);
ARGUMENTS
to
Destination address, in user space.
n
Number of bytes to zero.
DESCRIPTION
Zero a block of memory in user space. Caller must check the specified block with access_ok before calling this function.
Returns number of bytes that could not be cleared. On success, this will be zero.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 __CLEAR_USER(9)
