Ejemplos de bl_validate_designator en C++ (Cpp)

Ejemplo n.º 1

Archivo: dev.c Proyecto: AK101111/linux

static int
bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d,
		struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask)
{
	struct pnfs_block_volume *v = &volumes[idx];
	struct block_device *bdev;
	const struct pr_ops *ops;
	int error;

	if (!bl_validate_designator(v))
		return -EINVAL;

	bdev = bl_open_dm_mpath_udev_path(v);
	if (IS_ERR(bdev))
		bdev = bl_open_udev_path(v);
	if (IS_ERR(bdev))
		return PTR_ERR(bdev);
	d->bdev = bdev;

	d->len = i_size_read(d->bdev->bd_inode);
	d->map = bl_map_simple;
	d->pr_key = v->scsi.pr_key;

	pr_info("pNFS: using block device %s (reservation key 0x%llx)\n",
		d->bdev->bd_disk->disk_name, d->pr_key);

	ops = d->bdev->bd_disk->fops->pr_ops;
	if (!ops) {
		pr_err("pNFS: block device %s does not support reservations.",
				d->bdev->bd_disk->disk_name);
		error = -EINVAL;
		goto out_blkdev_put;
	}

	error = ops->pr_register(d->bdev, 0, d->pr_key, true);
	if (error) {
		pr_err("pNFS: failed to register key for block device %s.",
				d->bdev->bd_disk->disk_name);
		goto out_blkdev_put;
	}

	d->pr_registered = true;
	return 0;

out_blkdev_put:
	blkdev_put(d->bdev, FMODE_READ | FMODE_WRITE);
	return error;
}

Ejemplo n.º 2

Archivo: dev.c Proyecto: 020gzh/linux

static int
bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d,
		struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask)
{
	struct pnfs_block_volume *v = &volumes[idx];
	const struct pr_ops *ops;
	const char *devname;
	int error;

	if (!bl_validate_designator(v))
		return -EINVAL;

	switch (v->scsi.designator_len) {
	case 8:
		devname = kasprintf(GFP_KERNEL, "/dev/disk/by-id/wwn-0x%8phN",
				v->scsi.designator);
		break;
	case 12:
		devname = kasprintf(GFP_KERNEL, "/dev/disk/by-id/wwn-0x%12phN",
				v->scsi.designator);
		break;
	case 16:
		devname = kasprintf(GFP_KERNEL, "/dev/disk/by-id/wwn-0x%16phN",
				v->scsi.designator);
		break;
	default:
		return -EINVAL;
	}

	d->bdev = blkdev_get_by_path(devname, FMODE_READ, NULL);
	if (IS_ERR(d->bdev)) {
		pr_warn("pNFS: failed to open device %s (%ld)\n",
			devname, PTR_ERR(d->bdev));
		kfree(devname);
		return PTR_ERR(d->bdev);
	}

	kfree(devname);

	d->len = i_size_read(d->bdev->bd_inode);
	d->map = bl_map_simple;
	d->pr_key = v->scsi.pr_key;

	pr_info("pNFS: using block device %s (reservation key 0x%llx)\n",
		d->bdev->bd_disk->disk_name, d->pr_key);

	ops = d->bdev->bd_disk->fops->pr_ops;
	if (!ops) {
		pr_err("pNFS: block device %s does not support reservations.",
				d->bdev->bd_disk->disk_name);
		error = -EINVAL;
		goto out_blkdev_put;
	}

	error = ops->pr_register(d->bdev, 0, d->pr_key, true);
	if (error) {
		pr_err("pNFS: failed to register key for block device %s.",
				d->bdev->bd_disk->disk_name);
		goto out_blkdev_put;
	}

	d->pr_registered = true;
	return 0;

out_blkdev_put:
	blkdev_put(d->bdev, FMODE_READ);
	return error;
}