static int dasd_ioctl_readall_cmb(struct dasd_block *block, unsigned int cmd,
struct cmbdata __user *argp)
{
size_t size = _IOC_SIZE(cmd);
struct cmbdata data;
int ret;
ret = cmf_readall(block->base->cdev, &data);
if (!ret && copy_to_user(argp, &data, min(size, sizeof(*argp))))
return -EFAULT;
return ret;
}
static int
dasd_ioctl_readall_cmb(struct dasd_device *device, unsigned int cmd,
unsigned long arg)
{
struct cmbdata __user *argp = (void __user *) arg;
size_t size = _IOC_SIZE(cmd);
struct cmbdata data;
int ret;
ret = cmf_readall(device->cdev, &data);
if (!ret && copy_to_user(argp, &data, min(size, sizeof(*argp))))
return -EFAULT;
return ret;
}
static int
dasd_ioctl_readall_cmb(struct block_device *bdev, int no, long args)
{
struct dasd_device *device;
struct cmbdata __user *udata;
struct cmbdata data;
size_t size;
int ret;
device = bdev->bd_disk->private_data;
if (!device)
return -EINVAL;
udata = (void __user *) args;
size = _IOC_SIZE(no);
if (!access_ok(VERIFY_WRITE, udata, size))
return -EFAULT;
ret = cmf_readall(device->cdev, &data);
if (ret)
return ret;
if (copy_to_user(udata, &data, min(size, sizeof(*udata))))
return -EFAULT;
return 0;
}
