__copy_to_user - Copy a block of data into user space, with less checking.
"unsigned long __must_check __copy_to_user(void __user * " "to" ", const void * " "from" ", unsigned long " "n" ");"
to
Destination address, in user space.fromSource address, in kernel space. n Number of bytes to copy.
User context only. This function may sleep.
Copy data from kernel space to user space. Caller must check the specified block with access_okfR
before calling this function.Returns number of bytes that could not be copied. On success, this will be zero.
