static int
dasd_do_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
struct dasd_block *block = bdev->bd_disk->private_data;
void __user *argp;
if (is_compat_task())
argp = compat_ptr(arg);
else
argp = (void __user *)arg;
if (!block)
return -ENODEV;
if ((_IOC_DIR(cmd) != _IOC_NONE) && !arg) {
PRINT_DEBUG("empty data ptr");
return -EINVAL;
}
switch (cmd) {
case BIODASDDISABLE:
return dasd_ioctl_disable(bdev);
case BIODASDENABLE:
return dasd_ioctl_enable(bdev);
case BIODASDQUIESCE:
return dasd_ioctl_quiesce(block);
case BIODASDRESUME:
return dasd_ioctl_resume(block);
case BIODASDFMT:
return dasd_ioctl_format(bdev, argp);
case BIODASDINFO:
return dasd_ioctl_information(block, cmd, argp);
case BIODASDINFO2:
return dasd_ioctl_information(block, cmd, argp);
case BIODASDPRRD:
return dasd_ioctl_read_profile(block, argp);
case BIODASDPRRST:
return dasd_ioctl_reset_profile(block);
case BLKROSET:
return dasd_ioctl_set_ro(bdev, argp);
case DASDAPIVER:
return dasd_ioctl_api_version(argp);
case BIODASDCMFENABLE:
return enable_cmf(block->base->cdev);
case BIODASDCMFDISABLE:
return disable_cmf(block->base->cdev);
case BIODASDREADALLCMB:
return dasd_ioctl_readall_cmb(block, cmd, argp);
default:
/* if the discipline has an ioctl method try it. */
if (block->base->discipline->ioctl) {
int rval = block->base->discipline->ioctl(block, cmd, argp);
if (rval != -ENOIOCTLCMD)
return rval;
}
return -EINVAL;
}
}
static int
dasd_ioctl_cmf_disable(struct block_device *bdev, int no, long args)
{
struct dasd_device *device;
device = bdev->bd_disk->private_data;
if (!device)
return -EINVAL;
return disable_cmf(device->cdev);
}
int dasd_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
struct dasd_block *block;
struct dasd_device *base;
void __user *argp;
int rc;
if (is_compat_task())
argp = compat_ptr(arg);
else
argp = (void __user *)arg;
if ((_IOC_DIR(cmd) != _IOC_NONE) && !arg) {
PRINT_DEBUG("empty data ptr");
return -EINVAL;
}
base = dasd_device_from_gendisk(bdev->bd_disk);
if (!base)
return -ENODEV;
block = base->block;
rc = 0;
switch (cmd) {
case BIODASDDISABLE:
rc = dasd_ioctl_disable(bdev);
break;
case BIODASDENABLE:
rc = dasd_ioctl_enable(bdev);
break;
case BIODASDQUIESCE:
rc = dasd_ioctl_quiesce(block);
break;
case BIODASDRESUME:
rc = dasd_ioctl_resume(block);
break;
case BIODASDFMT:
rc = dasd_ioctl_format(bdev, argp);
break;
case BIODASDINFO:
rc = dasd_ioctl_information(block, cmd, argp);
break;
case BIODASDINFO2:
rc = dasd_ioctl_information(block, cmd, argp);
break;
case BIODASDPRRD:
rc = dasd_ioctl_read_profile(block, argp);
break;
case BIODASDPRRST:
rc = dasd_ioctl_reset_profile(block);
break;
case BLKROSET:
rc = dasd_ioctl_set_ro(bdev, argp);
break;
case DASDAPIVER:
rc = dasd_ioctl_api_version(argp);
break;
case BIODASDCMFENABLE:
rc = enable_cmf(base->cdev);
break;
case BIODASDCMFDISABLE:
rc = disable_cmf(base->cdev);
break;
case BIODASDREADALLCMB:
rc = dasd_ioctl_readall_cmb(block, cmd, argp);
break;
default:
/* if the discipline has an ioctl method try it. */
if (base->discipline->ioctl) {
rc = base->discipline->ioctl(block, cmd, argp);
if (rc == -ENOIOCTLCMD)
rc = -EINVAL;
} else
rc = -EINVAL;
}
dasd_put_device(base);
return rc;
}