dm: eliminate potential source of excessive kernel log noise
commit5.4-rM2-2.2.x-imx-squashed0378c625af
upstream. There wasn't ever a real need to log an error in the kernel log for ioctls issued with insufficient permissions. Simply return an error and if an admin/user is sufficiently motivated they can enable DM's dynamic debugging to see an explanation for why the ioctls were disallowed. Reported-by: Nir Soffer <nsoffer@redhat.com> Fixes:e980f62353
("dm: don't allow ioctls to targets that don't map to whole devices") Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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a34294774a
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2c3d03cdbd
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@ -548,7 +548,7 @@ static int dm_blk_ioctl(struct block_device *bdev, fmode_t mode,
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* subset of the parent bdev; require extra privileges.
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*/
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if (!capable(CAP_SYS_RAWIO)) {
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DMWARN_LIMIT(
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DMDEBUG_LIMIT(
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"%s: sending ioctl %x to DM device without required privilege.",
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current->comm, cmd);
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r = -ENOIOCTLCMD;
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