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bsg: add SG_IO to SG v4

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This adds SG_IO support to SG v4.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
FUJITA Tomonori 2006-12-20 11:20:57 +01:00 committed by Jens Axboe
parent 70e36eceaf
commit 10e8855b94
1 changed files with 21 additions and 2 deletions
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23
block/bsg.c
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@ -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
*/