-unsigned long long vbd_size(struct vbd *vbd)
-{
- return vbd_sz(vbd);
-}
-
-unsigned int vbd_info(struct vbd *vbd)
-{
- return vbd->type | (vbd->readonly ? VDISK_READONLY : 0);
-}
-
-unsigned long vbd_secsize(struct vbd *vbd)
-{
- return bdev_logical_block_size(vbd->bdev);
-}
-
-int vbd_create(struct blkif_st *blkif, blkif_vdev_t handle, unsigned major,
- unsigned minor, int readonly, int cdrom)
-{
- struct vbd *vbd;
- struct block_device *bdev;
-
- vbd = &blkif->vbd;
- vbd->handle = handle;
- vbd->readonly = readonly;
- vbd->type = 0;
-
- vbd->pdevice = MKDEV(major, minor);
-
- bdev = blkdev_get_by_dev(vbd->pdevice, vbd->readonly ?
- FMODE_READ : FMODE_WRITE, NULL);
-
- if (IS_ERR(bdev)) {
- DPRINTK("vbd_creat: device %08x could not be opened.\n",
- vbd->pdevice);
- return -ENOENT;
- }
-
- vbd->bdev = bdev;
- vbd->size = vbd_size(vbd);
-
- if (vbd->bdev->bd_disk == NULL) {
- DPRINTK("vbd_creat: device %08x doesn't exist.\n",
- vbd->pdevice);
- vbd_free(vbd);
- return -ENOENT;
- }
-
- if (vbd->bdev->bd_disk->flags & GENHD_FL_CD || cdrom)
- vbd->type |= VDISK_CDROM;
- if (vbd->bdev->bd_disk->flags & GENHD_FL_REMOVABLE)
- vbd->type |= VDISK_REMOVABLE;
-
- DPRINTK("Successful creation of handle=%04x (dom=%u)\n",
- handle, blkif->domid);
- return 0;
-}
-
-void vbd_free(struct vbd *vbd)
-{
- if (vbd->bdev)
- blkdev_put(vbd->bdev, vbd->readonly ? FMODE_READ : FMODE_WRITE);
- vbd->bdev = NULL;
-}
-
-int vbd_translate(struct phys_req *req, struct blkif_st *blkif, int operation)