__COPY_TO_USER(9)

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.

COPYRIGHT