diff options
| -rw-r--r-- | block/bsg.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/block/bsg.c b/block/bsg.c index 6d139d20ec9..9dc5d36a52e 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -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 */ |