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From: Herbert Xu <herbert@gondor.apana.org.au>
To: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: davem@davemloft.net, linux-crypto@vger.kernel.org,
	linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net, ecryptfs@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] crypto: allow to assign gfp_t for __crypto_alloc_tfm
Date: Tue, 19 May 2015 14:59:29 +0800	[thread overview]
Message-ID: <20150519065929.GA28610@gondor.apana.org.au> (raw)
In-Reply-To: <20150519065812.GA40012@jaegeuk-mac02.hsd1.ca.comcast.net>

On Mon, May 18, 2015 at 11:58:12PM -0700, Jaegeuk Kim wrote:
>
> > So where does the key get generated? The crypto tfm should be
> > allocated when you generate the key.
> 
> In fs/ext4/crypto.c,
> 
>  - writepage
>    - ext4_encrypt
>      - ext4_get_crypto_ctx
>        - crypto_alloc_ablkcipher
>      - ext4_page_crypto
>        - crypto_ablkcipher_setkey
>        - ablkcipher_request_alloc(GFP_NOFS)
>        - ablkcipher_request_set_crypt(PAGE_CACHE_SIZE)
>        - crypto_ablkcipher_encrypt
> 
>  - end_io
>    - crypto_free_tfm

No that's where you set the key, not where you generate the key.
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

WARNING: multiple messages have this Message-ID (diff)
From: herbert@gondor.apana.org.au (Herbert Xu)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] crypto: allow to assign gfp_t for __crypto_alloc_tfm
Date: Tue, 19 May 2015 14:59:29 +0800	[thread overview]
Message-ID: <20150519065929.GA28610@gondor.apana.org.au> (raw)
In-Reply-To: <20150519065812.GA40012@jaegeuk-mac02.hsd1.ca.comcast.net>

On Mon, May 18, 2015 at 11:58:12PM -0700, Jaegeuk Kim wrote:
>
> > So where does the key get generated? The crypto tfm should be
> > allocated when you generate the key.
> 
> In fs/ext4/crypto.c,
> 
>  - writepage
>    - ext4_encrypt
>      - ext4_get_crypto_ctx
>        - crypto_alloc_ablkcipher
>      - ext4_page_crypto
>        - crypto_ablkcipher_setkey
>        - ablkcipher_request_alloc(GFP_NOFS)
>        - ablkcipher_request_set_crypt(PAGE_CACHE_SIZE)
>        - crypto_ablkcipher_encrypt
> 
>  - end_io
>    - crypto_free_tfm

No that's where you set the key, not where you generate the key.
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

  reply	other threads:[~2015-05-19  6:59 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-19  5:46 [PATCH] crypto: allow to assign gfp_t for __crypto_alloc_tfm Jaegeuk Kim
2015-05-19  5:46 ` Jaegeuk Kim
2015-05-19  5:49 ` Herbert Xu
2015-05-19  5:49   ` Herbert Xu
2015-05-19  6:24   ` Jaegeuk Kim
2015-05-19  6:24     ` Jaegeuk Kim
2015-05-19  6:31     ` [f2fs-dev] [PATCH v2] " Jaegeuk Kim
2015-05-19  6:31       ` Jaegeuk Kim
2015-05-19  6:32       ` Herbert Xu
2015-05-19  6:32         ` [f2fs-dev] " Herbert Xu
2015-05-19  6:32         ` Herbert Xu
2015-05-19  6:32     ` [PATCH] " Herbert Xu
2015-05-19  6:32       ` Herbert Xu
2015-05-19  6:58       ` Jaegeuk Kim
2015-05-19  6:58         ` Jaegeuk Kim
2015-05-19  6:59         ` Herbert Xu [this message]
2015-05-19  6:59           ` Herbert Xu
2015-05-19  7:13           ` Jaegeuk Kim
2015-05-19  7:13             ` Jaegeuk Kim
2015-05-19  7:15             ` Herbert Xu
2015-05-19  7:15               ` Herbert Xu
2015-05-19  7:27               ` Jaegeuk Kim
2015-05-19  7:27                 ` Jaegeuk Kim
2015-05-19  7:30                 ` Herbert Xu
2015-05-19  7:30                   ` Herbert Xu
2015-05-19  7:59                   ` Jaegeuk Kim
2015-05-19  7:59                     ` Jaegeuk Kim
2015-05-19 14:14               ` Theodore Ts'o
2015-05-19 14:14                 ` Theodore Ts'o
2015-05-19 14:27                 ` Herbert Xu
2015-05-19 14:27                   ` Herbert Xu
2015-05-19 14:39                   ` Theodore Ts'o
2015-05-19 14:39                     ` Theodore Ts'o
2015-05-20  7:21                   ` Steffen Klassert
2015-05-20  7:21                     ` Steffen Klassert
2015-05-20  7:21                     ` Steffen Klassert
2015-05-20 14:59                     ` Theodore Ts'o
2015-05-20 14:59                       ` Theodore Ts'o
2015-05-20 15:30                       ` Ard Biesheuvel
2015-05-20 15:30                         ` Ard Biesheuvel
2015-05-20 15:30                         ` Ard Biesheuvel
2015-05-20 15:42                         ` Herbert Xu
2015-05-20 15:42                           ` Herbert Xu
2015-05-20 15:42                           ` Herbert Xu

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