__COPY_FROM_USER
Section: LINUX (9)
Updated: August 2005
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NAME
__copy_from_user_inatomic - Copy a block of data from user space, with less checking.
SYNOPSIS
-
- unsigned long __copy_from_user_inatomic (void * to, const void __user * from, unsigned long n);
ARGUMENTS
- to
-
Destination address, in kernel space.
- from
-
Source address, in user space.
- n
-
Number of bytes to copy.
CONTEXT
User context only. This function may sleep.
DESCRIPTION
Copy data from user space to kernel 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.
If some data could not be copied, this function will pad the copied data to the requested size using zero bytes.
Index
- NAME
-
- SYNOPSIS
-
- ARGUMENTS
-
- CONTEXT
-
- DESCRIPTION
-
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Time: 00:30:14 GMT, August 30, 2005