#include <linux/bio.h>
#include <linux/slab.h>
+#define DM_MSG_PREFIX "linear"
+
/*
* Linear: maps a linear range of a device.
*/
static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv)
{
struct linear_c *lc;
+ unsigned long long tmp;
if (argc != 2) {
- ti->error = "dm-linear: Invalid argument count";
+ ti->error = "Invalid argument count";
return -EINVAL;
}
return -ENOMEM;
}
- if (sscanf(argv[1], SECTOR_FORMAT, &lc->start) != 1) {
+ if (sscanf(argv[1], "%llu", &tmp) != 1) {
ti->error = "dm-linear: Invalid device sector";
goto bad;
}
+ lc->start = tmp;
if (dm_get_device(ti, argv[0], lc->start, ti->len,
dm_table_get_mode(ti->table), &lc->dev)) {
bio->bi_bdev = lc->dev->bdev;
bio->bi_sector = lc->start + (bio->bi_sector - ti->begin);
- return 1;
+ return DM_MAPIO_REMAPPED;
}
static int linear_status(struct dm_target *ti, status_type_t type,
break;
case STATUSTYPE_TABLE:
- snprintf(result, maxlen, "%s " SECTOR_FORMAT, lc->dev->name,
- lc->start);
+ snprintf(result, maxlen, "%s %llu", lc->dev->name,
+ (unsigned long long)lc->start);
break;
}
return 0;
}
+static int linear_ioctl(struct dm_target *ti, struct inode *inode,
+ struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ struct linear_c *lc = (struct linear_c *) ti->private;
+ struct block_device *bdev = lc->dev->bdev;
+ struct file fake_file = {};
+ struct dentry fake_dentry = {};
+
+ fake_file.f_mode = lc->dev->mode;
+ fake_file.f_path.dentry = &fake_dentry;
+ fake_dentry.d_inode = bdev->bd_inode;
+
+ return blkdev_driver_ioctl(bdev->bd_inode, &fake_file, bdev->bd_disk, cmd, arg);
+}
+
static struct target_type linear_target = {
.name = "linear",
- .version= {1, 0, 1},
+ .version= {1, 0, 2},
.module = THIS_MODULE,
.ctr = linear_ctr,
.dtr = linear_dtr,
.map = linear_map,
.status = linear_status,
+ .ioctl = linear_ioctl,
};
int __init dm_linear_init(void)
int r = dm_register_target(&linear_target);
if (r < 0)
- DMERR("linear: register failed %d", r);
+ DMERR("register failed %d", r);
return r;
}
int r = dm_unregister_target(&linear_target);
if (r < 0)
- DMERR("linear: unregister failed %d", r);
+ DMERR("unregister failed %d", r);
}