scsi: bsg: Remove support for SCSI_IOCTL_SEND_COMMAND

[ Upstream commit beec64d0c9749afedf51c3c10cf52de1d9a89cc0 ]

SCSI_IOCTL_SEND_COMMAND has been deprecated longer than bsg exists and has
been warning for just as long.  More importantly it harcodes SCSI CDBs and
thus will do the wrong thing on non-SCSI bsg nodes.

Link: https://lore.kernel.org/r/20210724072033.1284840-2-hch@lst.de
Fixes: aa387cc89567 ("block: add bsg helper library")
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/block/bsg.c b/block/bsg.c
index 3d78e843a83f65469c0eeb19ebea9c28a06d2529..2cbc1fcc8247bc5ae189209d297218275e680d1a 100644 (file)
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -371,10 +371,13 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
        case SG_GET_RESERVED_SIZE:
        case SG_SET_RESERVED_SIZE:
        case SG_EMULATED_HOST:
-       case SCSI_IOCTL_SEND_COMMAND:
                return scsi_cmd_ioctl(bd->queue, NULL, file->f_mode, cmd, uarg);
        case SG_IO:
                return bsg_sg_io(bd->queue, file->f_mode, uarg);
+       case SCSI_IOCTL_SEND_COMMAND:
+               pr_warn_ratelimited("%s: calling unsupported SCSI_IOCTL_SEND_COMMAND\n",
+                               current->comm);
+               return -EINVAL;
        default:
                return -ENOTTY;
        }