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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: [email protected]
Cc: Jens Axboe <[email protected]>
Cc: James Bottomley <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Paolo Bonzini 2012-01-12 16:01:27 +01:00 • committed by Linus Torvalds
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;