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author | Paolo Bonzini <pbonzini@redhat.com> | 2012-01-12 16:01:27 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-25 13:53:24 -0800 |
commit | 9e5cfd33a485494c731458de02ae58ea256538b8 (patch) | |
tree | 0801816ba03ba0c61dd395cde0a344ea01deb77c | |
parent | dc01426e7f98c1e79bbbb41a991d7d4cf77ac968 (diff) | |
download | lwn-9e5cfd33a485494c731458de02ae58ea256538b8.tar.gz lwn-9e5cfd33a485494c731458de02ae58ea256538b8.zip |
block: add and use scsi_blk_cmd_ioctl
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@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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[bwh: Backport to 2.6.32 - adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
-rw-r--r-- | block/scsi_ioctl.c | 7 | ||||
-rw-r--r-- | drivers/block/cciss.c | 6 | ||||
-rw-r--r-- | drivers/block/ub.c | 3 | ||||
-rw-r--r-- | drivers/block/virtio_blk.c | 4 | ||||
-rw-r--r-- | drivers/cdrom/cdrom.c | 3 | ||||
-rw-r--r-- | drivers/ide/ide-floppy_ioctl.c | 3 | ||||
-rw-r--r-- | drivers/scsi/sd.c | 2 | ||||
-rw-r--r-- | 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 1d5a7805446b..114ee2964b2e 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -689,6 +689,13 @@ 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); + 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 ca9c54870f29..68b90d96451e 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -1583,7 +1583,7 @@ 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: @@ -1594,9 +1594,9 @@ 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 c739b203fe91..c6ac1b2efa9c 100644 --- a/drivers/block/ub.c +++ b/drivers/block/ub.c @@ -1726,10 +1726,9 @@ 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 51042f0ba7e1..44d019b3733e 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -200,8 +200,8 @@ 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 614da5b8613a..59cccc95f8f4 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 568d36389259..2dd1b736e2b9 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -838,7 +838,7 @@ 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 a06bfabec4d0..63070ad051e0 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -777,6 +777,8 @@ 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, |