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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2023-04-13 14:24:25 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-04-20 18:20:04 +0800 |
| commit | cfbda734d6678047fd3beb1f67d9682825773341 (patch) | |
| tree | 8e15e2746f515edc440ea8a72518bb6e05228be9 /crypto | |
| parent | 0303b7f5df603b91bc12e39c9309c094816ba6a9 (diff) | |
| download | lwn-cfbda734d6678047fd3beb1f67d9682825773341.tar.gz lwn-cfbda734d6678047fd3beb1f67d9682825773341.zip | |
crypto: cryptd - Add support for cloning hashes
Allow cryptd hashes to be cloned. The underlying hash will be cloned.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/cryptd.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/crypto/cryptd.c b/crypto/cryptd.c index 43ce347ccba0..bbcc368b6a55 100644 --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -446,6 +446,21 @@ static int cryptd_hash_init_tfm(struct crypto_ahash *tfm) return 0; } +static int cryptd_hash_clone_tfm(struct crypto_ahash *ntfm, + struct crypto_ahash *tfm) +{ + struct cryptd_hash_ctx *nctx = crypto_ahash_ctx(ntfm); + struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); + struct crypto_shash *hash; + + hash = crypto_clone_shash(ctx->child); + if (IS_ERR(hash)) + return PTR_ERR(hash); + + nctx->child = hash; + return 0; +} + static void cryptd_hash_exit_tfm(struct crypto_ahash *tfm) { struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); @@ -678,6 +693,7 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); inst->alg.init_tfm = cryptd_hash_init_tfm; + inst->alg.clone_tfm = cryptd_hash_clone_tfm; inst->alg.exit_tfm = cryptd_hash_exit_tfm; inst->alg.init = cryptd_hash_init_enqueue; |