other versions
- jessie 3.16.56-1+deb8u1
__COPY_TO_USER(9) | Memory Management in Linux | __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¶
toDestination 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. 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¶
May 2018 | Kernel Hackers Manual 3.16 |