move_addr_to_user(9)
NAME
move_addr_to_user - copy an address to user space
SYNOPSIS
int move_addr_to_user(void * kaddr, int klen, void __user * uaddr, int __user * ulen);
ARGUMENTS
- kaddr
- kernel space address
- klen
- length of address in kernel
- uaddr
- user space address
- ulen
- pointer to user length field
DESCRIPTION
- The value pointed to by ulen on entry is the buffer length
- available. This is overwritten with the buffer space used. -EIN
- VAL is returned if an overlong buffer is specified or a negative
- buffer size. -EFAULT is returned if either the buffer or the
- length field are not accessible. After copying the data up to the
- limit the user specifies, the true length of the data is written
- over the length limit the user specified. Zero is returned for a
- success.