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block: add and use scsi_blk_cmd_ioctl

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Introduce a wrapper around scsi_cmd_ioctl that takes a block device.

The function will then be enhanced to detect partition block devices
and, in that case, subject the ioctls to whitelisting.

Cc: linux-scsi@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>
Cc: James Bottomley <JBottomley@parallels.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Paolo Bonzini
2012-01-12 16:01:27 +01:00
committed by Linus Torvalds
parent 81d48f0aee
commit 577ebb374c
8 changed files with 18 additions and 12 deletions
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3
drivers/cdrom/cdrom.c
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@@ -2746,12 +2746,11 @@ int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
{
void __user *argp = (void __user *)arg;
int ret;
struct gendisk *disk = bdev->bd_disk;
/*
* Try the generic SCSI command ioctl's first.
*/
ret = scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
if (ret != -ENOTTY)
return ret;