Commit 10e8855b authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by Jens Axboe
Browse files

bsg: add SG_IO to SG v4 



This adds SG_IO support to SG v4.

Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 70e36ece

block/bsg.c

+21 −2
Original line number Diff line number Diff line
@@ -945,8 +945,27 @@ bsg_ioctl(struct inode *inode, struct file *file, unsigned int cmd, 
		void __user *uarg = (void __user *) arg;

		return scsi_cmd_ioctl(file, bd->disk, cmd, uarg);

	}

	case SG_IO:

		return -EINVAL;

	case SG_IO: {

		struct request *rq;

		struct bio *bio;

		struct sg_io_v4 hdr;



		if (copy_from_user(&hdr, uarg, sizeof(hdr)))

			return -EFAULT;



		rq = bsg_map_hdr(bd, &hdr);

		if (IS_ERR(rq))

			return PTR_ERR(rq);



		bio = rq->bio;

		blk_execute_rq(bd->queue, bd->disk, rq, 0);

		blk_complete_sgv4_hdr_rq(rq, &hdr, bio);



		if (copy_to_user(uarg, &hdr, sizeof(hdr)))

			return -EFAULT;

		else

			return 0;

	}

	/*

	 * block device ioctls

	 */