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Date: Wed, 5 Feb 2014 14:59:25 -0500
From: Paul Gortmaker <paul.gortmaker@...driver.com>
To: <stable@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Paolo Bonzini <pbonzini@...hat.com>, <linux-scsi@...r.kernel.org>,
Jens Axboe <axboe@...nel.dk>,
James Bottomley <JBottomley@...allels.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [v2.6.34-stable 010/213] block: add and use scsi_blk_cmd_ioctl
From: Paolo Bonzini <pbonzini@...hat.com>
-------------------
This is a commit scheduled for the next v2.6.34 longterm release.
http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git
If you see a problem with using this for longterm, please comment.
-------------------
commit 577ebb374c78314ac4617242f509e2f5e7156649 upstream.
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@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>
Cc: James Bottomley <JBottomley@...allels.com>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
block/scsi_ioctl.c | 7 +++++++
drivers/block/cciss.c | 6 +++---
drivers/block/ub.c | 3 +--
drivers/block/virtio_blk.c | 4 ++--
drivers/cdrom/cdrom.c | 3 +--
drivers/ide/ide-floppy_ioctl.c | 3 +--
drivers/scsi/sd.c | 2 +-
include/linux/blkdev.h | 2 ++
8 files changed, 18 insertions(+), 12 deletions(-)
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index 4f4230b79bb6..57ac93754841 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -691,6 +691,13 @@ int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mod
}
EXPORT_SYMBOL(scsi_cmd_ioctl);
+int scsi_cmd_blk_ioctl(struct block_device *bd, fmode_t mode,
+ unsigned int cmd, void __user *arg)
+{
+ return scsi_cmd_ioctl(bd->bd_disk->queue, bd->bd_disk, mode, cmd, arg);
+}
+EXPORT_SYMBOL(scsi_cmd_blk_ioctl);
+
static int __init blk_scsi_ioctl_init(void)
{
blk_set_cmd_filter_defaults(&blk_default_cmd_filter);
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index eb5ff0531cfb..54bad7584ea4 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -1652,7 +1652,7 @@ static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
return status;
}
- /* scsi_cmd_ioctl handles these, below, though some are not */
+ /* scsi_cmd_blk_ioctl handles these, below, though some are not */
/* very meaningful for cciss. SG_IO is the main one people want. */
case SG_GET_VERSION_NUM:
@@ -1663,9 +1663,9 @@ static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
case SG_EMULATED_HOST:
case SG_IO:
case SCSI_IOCTL_SEND_COMMAND:
- return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
+ return scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
- /* scsi_cmd_ioctl would normally handle these, below, but */
+ /* scsi_cmd_blk_ioctl would normally handle these, below, but */
/* they aren't a good fit for cciss, as CD-ROMs are */
/* not supported, and we don't have any bus/target/lun */
/* which we present to the kernel. */
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index 0536b5b29adc..1c1533a59c4d 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -1727,10 +1727,9 @@ static int ub_bd_release(struct gendisk *disk, fmode_t mode)
static int ub_bd_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
- struct gendisk *disk = bdev->bd_disk;
void __user *usermem = (void __user *) arg;
- return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, usermem);
+ return scsi_cmd_blk_ioctl(bdev, mode, cmd, usermem);
}
/*
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 2138a7ae050c..4abfa80fdcd6 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -201,8 +201,8 @@ static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
if (!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_SCSI))
return -ENOTTY;
- return scsi_cmd_ioctl(disk->queue, disk, mode, cmd,
- (void __user *)data);
+ return scsi_cmd_blk_ioctl(bdev, mode, cmd,
+ (void __user *)data);
}
/* We provide getgeo only to please some old bootloader/partitioning tools */
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index e3749d0ba68b..5e7c72d3fe39 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -2684,12 +2684,11 @@ 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;
diff --git a/drivers/ide/ide-floppy_ioctl.c b/drivers/ide/ide-floppy_ioctl.c
index 9c2288234dea..05f024caf4c9 100644
--- a/drivers/ide/ide-floppy_ioctl.c
+++ b/drivers/ide/ide-floppy_ioctl.c
@@ -287,8 +287,7 @@ int ide_floppy_ioctl(ide_drive_t *drive, struct block_device *bdev,
* and CDROM_SEND_PACKET (legacy) ioctls
*/
if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
- err = scsi_cmd_ioctl(bdev->bd_disk->queue, bdev->bd_disk,
- mode, cmd, argp);
+ err = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
if (err == -ENOTTY)
err = generic_ide_ioctl(drive, bdev, cmd, arg);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 18e6c59ed12d..654e2674e7c3 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -907,7 +907,7 @@ static int sd_ioctl(struct block_device *bdev, fmode_t mode,
case SCSI_IOCTL_GET_BUS_NUMBER:
return scsi_ioctl(sdp, cmd, p);
default:
- error = scsi_cmd_ioctl(disk->queue, disk, mode, cmd, p);
+ error = scsi_cmd_blk_ioctl(bdev, mode, cmd, p);
if (error != -ENOTTY)
return error;
}
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index cda62da68108..ba55e497f7dc 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -793,6 +793,8 @@ extern void blk_plug_device(struct request_queue *);
extern void blk_plug_device_unlocked(struct request_queue *);
extern int blk_remove_plug(struct request_queue *);
extern void blk_recount_segments(struct request_queue *, struct bio *);
+extern int scsi_cmd_blk_ioctl(struct block_device *, fmode_t,
+ unsigned int, void __user *);
extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t,
unsigned int, void __user *);
extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t,
--
1.8.5.2
--
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