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__copy_to_user
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
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.
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