X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fmd%2Fdm-linear.c;h=17753d80ad228022b2575e46ee28f867cfd93d6f;hb=refs%2Fheads%2Fvserver;hp=6a2cd5dc8a6352879d396e6a977b6508730ba0d2;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c
index 6a2cd5dc8..17753d80a 100644
--- a/drivers/md/dm-linear.c
+++ b/drivers/md/dm-linear.c
@@ -12,6 +12,8 @@
 #include <linux/bio.h>
 #include <linux/slab.h>
 
+#define DM_MSG_PREFIX "linear"
+
 /*
  * Linear: maps a linear range of a device.
  */
@@ -26,9 +28,10 @@ struct linear_c {
 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;
 	}
 
@@ -38,10 +41,11 @@ static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 		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)) {
@@ -73,7 +77,7 @@ static int linear_map(struct dm_target *ti, struct bio *bio,
 	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,
@@ -87,21 +91,38 @@ 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)
@@ -109,7 +130,7 @@ 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;
 }
@@ -119,5 +140,5 @@ void dm_linear_exit(void)
 	int r = dm_unregister_target(&linear_target);
 
 	if (r < 0)
-		DMERR("linear: unregister failed %d", r);
+		DMERR("unregister failed %d", r);
 }