summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--drivers/md/dm.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 9e958bc94fed..5bd9ab06a562 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -465,13 +465,16 @@ static int dm_blk_ioctl(struct block_device *bdev, fmode_t mode,
if (r > 0) {
/*
- * Target determined this ioctl is being issued against
- * a logical partition of the parent bdev; so extra
- * validation is needed.
+ * Target determined this ioctl is being issued against a
+ * subset of the parent bdev; require extra privileges.
*/
- r = scsi_verify_blk_ioctl(NULL, cmd);
- if (r)
+ if (!capable(CAP_SYS_RAWIO)) {
+ DMWARN_LIMIT(
+ "%s: sending ioctl %x to DM device without required privilege.",
+ current->comm, cmd);
+ r = -ENOIOCTLCMD;
goto out;
+ }
}
r = __blkdev_driver_ioctl(bdev, mode, cmd, arg);