(access_ok(VERIFY_READ, private_ptr, sizeof(*private_ptr)) ? \
__get_user(x, private_ptr) : ((x) = 0, -EFAULT)); \
})
(access_ok(VERIFY_READ, private_ptr, sizeof(*private_ptr)) ? \
__get_user(x, private_ptr) : ((x) = 0, -EFAULT)); \
})
(access_ok(VERIFY_WRITE, private_ptr, sizeof(*private_ptr)) ? \
__put_user(x, private_ptr) : -EFAULT); \
})
(access_ok(VERIFY_WRITE, private_ptr, sizeof(*private_ptr)) ? \
__put_user(x, private_ptr) : -EFAULT); \
})