/*
* Return dasd information. Used for BIODASDINFO and BIODASDINFO2.
*/
static int dasd_ioctl_information(struct dasd_block *block,
unsigned int cmd, void __user *argp)
{
struct dasd_information2_t *dasd_info;
unsigned long flags;
int rc;
struct dasd_device *base;
struct ccw_device *cdev;
struct ccw_dev_id dev_id;
base = block->base;
if (!base->discipline->fill_info)
return -EINVAL;
dasd_info = kzalloc(sizeof(struct dasd_information2_t), GFP_KERNEL);
if (dasd_info == NULL)
return -ENOMEM;
rc = base->discipline->fill_info(base, dasd_info);
if (rc) {
kfree(dasd_info);
return rc;
}
cdev = base->cdev;
ccw_device_get_id(cdev, &dev_id);
dasd_info->devno = dev_id.devno;
dasd_info->schid = _ccw_device_get_subchannel_number(base->cdev);
dasd_info->cu_type = cdev->id.cu_type;
dasd_info->cu_model = cdev->id.cu_model;
dasd_info->dev_type = cdev->id.dev_type;
dasd_info->dev_model = cdev->id.dev_model;
dasd_info->status = base->state;
/*
* The open_count is increased for every opener, that includes
* the blkdev_get in dasd_scan_partitions.
* This must be hidden from user-space.
*/
dasd_info->open_count = atomic_read(&block->open_count);
if (!block->bdev)
dasd_info->open_count++;
/*
* check if device is really formatted
* LDL / CDL was returned by 'fill_info'
*/
if ((base->state < DASD_STATE_READY) ||
(dasd_check_blocksize(block->bp_block)))
dasd_info->format = DASD_FORMAT_NONE;
dasd_info->features |=
((base->features & DASD_FEATURE_READONLY) != 0);
if (base->discipline)
memcpy(dasd_info->type, base->discipline->name, 4);
else
memcpy(dasd_info->type, "none", 4);
if (block->request_queue->request_fn) {
struct list_head *l;
#ifdef DASD_EXTENDED_PROFILING
{
struct list_head *l;
spin_lock_irqsave(&block->lock, flags);
list_for_each(l, &block->request_queue->queue_head)
dasd_info->req_queue_len++;
spin_unlock_irqrestore(&block->lock, flags);
}
#endif /* DASD_EXTENDED_PROFILING */
spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
list_for_each(l, &base->ccw_queue)
dasd_info->chanq_len++;
spin_unlock_irqrestore(get_ccwdev_lock(base->cdev),
flags);
}
rc = 0;
if (copy_to_user(argp, dasd_info,
((cmd == (unsigned int) BIODASDINFO2) ?
sizeof(struct dasd_information2_t) :
sizeof(struct dasd_information_t))))
rc = -EFAULT;
kfree(dasd_info);
return rc;
}
static int
dasd_devices_show(struct seq_file *m, void *v)
{
struct dasd_device *device;
struct dasd_block *block;
char *substr;
device = dasd_device_from_devindex((unsigned long) v - 1);
if (IS_ERR(device))
return 0;
if (device->block)
block = device->block;
else {
dasd_put_device(device);
return 0;
}
/* Print device number. */
seq_printf(m, "%s", dev_name(&device->cdev->dev));
/* Print discipline string. */
if (device != NULL && device->discipline != NULL)
seq_printf(m, "(%s)", device->discipline->name);
else
seq_printf(m, "(none)");
/* Print kdev. */
if (block->gdp)
seq_printf(m, " at (%3d:%6d)",
MAJOR(disk_devt(block->gdp)),
MINOR(disk_devt(block->gdp)));
else
seq_printf(m, " at (???:??????)");
/* Print device name. */
if (block->gdp)
seq_printf(m, " is %-8s", block->gdp->disk_name);
else
seq_printf(m, " is ????????");
/* Print devices features. */
substr = (device->features & DASD_FEATURE_READONLY) ? "(ro)" : " ";
seq_printf(m, "%4s: ", substr);
/* Print device status information. */
switch ((device != NULL) ? device->state : -1) {
case -1:
seq_printf(m, "unknown");
break;
case DASD_STATE_NEW:
seq_printf(m, "new");
break;
case DASD_STATE_KNOWN:
seq_printf(m, "detected");
break;
case DASD_STATE_BASIC:
seq_printf(m, "basic");
break;
case DASD_STATE_UNFMT:
seq_printf(m, "unformatted");
break;
case DASD_STATE_READY:
case DASD_STATE_ONLINE:
seq_printf(m, "active ");
if (dasd_check_blocksize(block->bp_block))
seq_printf(m, "n/f ");
else
seq_printf(m,
"at blocksize: %d, %ld blocks, %ld MB",
block->bp_block, block->blocks,
((block->bp_block >> 9) *
block->blocks) >> 11);
break;
default:
seq_printf(m, "no stat");
break;
}
dasd_put_device(device);
if (dasd_probeonly)
seq_printf(m, "(probeonly)");
seq_printf(m, "\n");
return 0;
}
static int
dasd_devices_show(struct seq_file *m, void *v)
{
struct dasd_device *device;
char *substr;
device = dasd_device_from_devindex((unsigned long) v - 1);
if (IS_ERR(device))
return 0;
/* Print device number. */
seq_printf(m, "%s", device->cdev->dev.bus_id);
/* Print discipline string. */
if (device != NULL && device->discipline != NULL)
seq_printf(m, "(%s)", device->discipline->name);
else
seq_printf(m, "(none)");
/* Print kdev. */
if (device->gdp)
seq_printf(m, " at (%3d:%6d)",
device->gdp->major, device->gdp->first_minor);
else
seq_printf(m, " at (???:??????)");
/* Print device name. */
if (device->gdp)
seq_printf(m, " is %-8s", device->gdp->disk_name);
else
seq_printf(m, " is ????????");
/* Print devices features. */
substr = test_bit(DASD_FLAG_RO, &device->flags) ? "(ro)" : " ";
seq_printf(m, "%4s: ", substr);
/* Print device status information. */
switch ((device != NULL) ? device->state : -1) {
case -1:
seq_printf(m, "unknown");
break;
case DASD_STATE_NEW:
seq_printf(m, "new");
break;
case DASD_STATE_KNOWN:
seq_printf(m, "detected");
break;
case DASD_STATE_BASIC:
seq_printf(m, "basic");
break;
case DASD_STATE_READY:
case DASD_STATE_ONLINE:
seq_printf(m, "active ");
if (dasd_check_blocksize(device->bp_block))
seq_printf(m, "n/f ");
else
seq_printf(m,
"at blocksize: %d, %ld blocks, %ld MB",
device->bp_block, device->blocks,
((device->bp_block >> 9) *
device->blocks) >> 11);
break;
default:
seq_printf(m, "no stat");
break;
}
dasd_put_device(device);
if (dasd_probeonly)
seq_printf(m, "(probeonly)");
seq_printf(m, "\n");
return 0;
}
