diff options
Diffstat (limited to 'drivers/s390/block/dasd_ioctl.c')
| -rw-r--r-- | drivers/s390/block/dasd_ioctl.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c index bb6caf46bbd..c8319bef273 100644 --- a/drivers/s390/block/dasd_ioctl.c +++ b/drivers/s390/block/dasd_ioctl.c @@ -16,6 +16,7 @@ #include <linux/blkpg.h> #include <asm/ccwdev.h> +#include <asm/cmb.h> #include <asm/uaccess.h> /* This is ugly... */ @@ -406,6 +407,21 @@ dasd_ioctl_set_ro(struct block_device *bdev, void __user *argp) return dasd_set_feature(device->cdev, DASD_FEATURE_READONLY, intval); } +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; +} + int dasd_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) @@ -447,6 +463,12 @@ dasd_ioctl(struct inode *inode, struct file *file, return dasd_ioctl_set_ro(bdev, argp); case DASDAPIVER: return dasd_ioctl_api_version(argp); + case BIODASDCMFENABLE: + return enable_cmf(device->cdev); + case BIODASDCMFDISABLE: + return disable_cmf(device->cdev); + case BIODASDREADALLCMB: + return dasd_ioctl_readall_cmb(device, cmd, arg); default: /* if the discipline has an ioctl method try it. */ if (device->discipline->ioctl) { |