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authorHerbert Xu <herbert@gondor.apana.org.au>2009-07-08 18:46:23 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2009-07-08 19:00:38 +0800
commit619a6ebd2547f3a8ec2fbc5245daaa1f2056eb32 (patch)
tree4b32cd84e9eb31c1068a7397ffa9e29f5cc79ec1 /crypto/shash.c
parent7d6f56400a695af497a8b7c23ea0ff9c3d9d99f4 (diff)
downloadlinux-619a6ebd2547f3a8ec2fbc5245daaa1f2056eb32.tar.gz
crypto: shash - Add shash_register_instance
This patch adds shash_register_instance so that shash instances can be registered without bypassing the shash checks applied to normal algorithms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/shash.c')
-rw-r--r--crypto/shash.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/crypto/shash.c b/crypto/shash.c
index 21bcff6be5b..3d242425d69 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -480,7 +480,7 @@ struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type,
}
EXPORT_SYMBOL_GPL(crypto_alloc_shash);
-int crypto_register_shash(struct shash_alg *alg)
+static int shash_prepare_alg(struct shash_alg *alg)
{
struct crypto_alg *base = &alg->base;
@@ -491,6 +491,17 @@ int crypto_register_shash(struct shash_alg *alg)
base->cra_type = &crypto_shash_type;
base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
base->cra_flags |= CRYPTO_ALG_TYPE_SHASH;
+ return 0;
+}
+
+int crypto_register_shash(struct shash_alg *alg)
+{
+ struct crypto_alg *base = &alg->base;
+ int err;
+
+ err = shash_prepare_alg(alg);
+ if (err)
+ return err;
return crypto_register_alg(base);
}
@@ -502,6 +513,19 @@ int crypto_unregister_shash(struct shash_alg *alg)
}
EXPORT_SYMBOL_GPL(crypto_unregister_shash);
+int shash_register_instance(struct crypto_template *tmpl,
+ struct shash_instance *inst)
+{
+ int err;
+
+ err = shash_prepare_alg(&inst->alg);
+ if (err)
+ return err;
+
+ return crypto_register_instance(tmpl, shash_crypto_instance(inst));
+}
+EXPORT_SYMBOL_GPL(shash_register_instance);
+
void shash_free_instance(struct crypto_instance *inst)
{
crypto_drop_spawn(crypto_instance_ctx(inst));