| __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 __must_check __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. 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 2024 | Kernel Hackers Manual 2.6. |