[dm-devel] Re: [BUG] dmsetup table output changed from 2.6.18 to 2.6.19-rc3 and breaks yaird.

[Alasdair G Kergon]

On Mon, Oct 30, 2006 at 11:00:29AM -0800, Linus Torvalds wrote:
> (maybe something like this trivial one? Totally untested, but it would 
> seem to be the sane approach)
 
> diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
> index a625576..645e3ce 100644
> --- a/drivers/md/dm-crypt.c
> +++ b/drivers/md/dm-crypt.c
> @@ -925,8 +925,7 @@ static int crypt_status(struct dm_target
>  		break;
>  
>  	case STATUSTYPE_TABLE:
> -		cipher = crypto_blkcipher_name(cc->tfm);
> -
> +		cipher = cc->cipher;
>  		chainmode = cc->chainmode;
>  
>  		if (cc->iv_mode)
> 
> 

Looks correct.

The point of STATUSTYPE_TABLE is to return (readable) output to userspace in
a format that the crypt_ctr() function would accept back in.

So crypt_ctr() now stores a private copy of cipher and chainmode for
crypt_status() to regurgitate when requested.

Alasdair
-- 
agk at redhat.com