X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=crypto%2Fapi.c;h=4fb7fa45cb0de649194262c5f6061669b3391a80;hb=940cc2df935d00e704c7b8366bdaedda379abf85;hp=bc4b7901acdf49f62da451998d22082de906203c;hpb=6d7d684d635ac5a345f075015f2c84169c111c6a;p=linux-2.6

diff --git a/crypto/api.c b/crypto/api.c
index bc4b7901ac..4fb7fa45cb 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -226,17 +226,18 @@ static int crypto_init_flags(struct crypto_tfm *tfm, u32 flags)
 		
 	case CRYPTO_ALG_TYPE_COMPRESS:
 		return crypto_init_compress_flags(tfm, flags);
-	
-	default:
-		break;
 	}
 	
-	BUG();
-	return -EINVAL;
+	return 0;
 }
 
 static int crypto_init_ops(struct crypto_tfm *tfm)
 {
+	const struct crypto_type *type = tfm->__crt_alg->cra_type;
+
+	if (type)
+		return type->init(tfm);
+
 	switch (crypto_tfm_alg_type(tfm)) {
 	case CRYPTO_ALG_TYPE_CIPHER:
 		return crypto_init_cipher_ops(tfm);
@@ -257,6 +258,14 @@ static int crypto_init_ops(struct crypto_tfm *tfm)
 
 static void crypto_exit_ops(struct crypto_tfm *tfm)
 {
+	const struct crypto_type *type = tfm->__crt_alg->cra_type;
+
+	if (type) {
+		if (type->exit)
+			type->exit(tfm);
+		return;
+	}
+
 	switch (crypto_tfm_alg_type(tfm)) {
 	case CRYPTO_ALG_TYPE_CIPHER:
 		crypto_exit_cipher_ops(tfm);
@@ -278,26 +287,31 @@ static void crypto_exit_ops(struct crypto_tfm *tfm)
 
 static unsigned int crypto_ctxsize(struct crypto_alg *alg, int flags)
 {
+	const struct crypto_type *type = alg->cra_type;
 	unsigned int len;
 
+	len = alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1);
+	if (type)
+		return len + type->ctxsize(alg);
+
 	switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
 	default:
 		BUG();
 
 	case CRYPTO_ALG_TYPE_CIPHER:
-		len = crypto_cipher_ctxsize(alg, flags);
+		len += crypto_cipher_ctxsize(alg, flags);
 		break;
 		
 	case CRYPTO_ALG_TYPE_DIGEST:
-		len = crypto_digest_ctxsize(alg, flags);
+		len += crypto_digest_ctxsize(alg, flags);
 		break;
 		
 	case CRYPTO_ALG_TYPE_COMPRESS:
-		len = crypto_compress_ctxsize(alg, flags);
+		len += crypto_compress_ctxsize(alg, flags);
 		break;
 	}
 
-	return len + (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1));
+	return len;
 }
 
 void crypto_shoot_alg(struct crypto_alg *alg)
@@ -317,7 +331,7 @@ struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 flags)
 	tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, flags);
 	tfm = kzalloc(tfm_size, GFP_KERNEL);
 	if (tfm == NULL)
-		goto out;
+		goto out_err;
 
 	tfm->__crt_alg = alg;
 
@@ -341,6 +355,7 @@ cra_init_failed:
 	crypto_exit_ops(tfm);
 out_free_tfm:
 	kfree(tfm);
+out_err:
 	tfm = ERR_PTR(err);
 out:
 	return tfm;
@@ -400,14 +415,14 @@ struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask)
 		struct crypto_alg *alg;
 
 		alg = crypto_alg_mod_lookup(alg_name, type, mask);
-		err = PTR_ERR(alg);
-		tfm = ERR_PTR(err);
-		if (IS_ERR(alg))
+		if (IS_ERR(alg)) {
+			err = PTR_ERR(alg);
 			goto err;
+		}
 
 		tfm = __crypto_alloc_tfm(alg, 0);
 		if (!IS_ERR(tfm))
-			break;
+			return tfm;
 
 		crypto_mod_put(alg);
 		err = PTR_ERR(tfm);
@@ -419,9 +434,9 @@ err:
 			err = -EINTR;
 			break;
 		}
-	};
+	}
 
-	return tfm;
+	return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_base);
  
@@ -468,3 +483,17 @@ int crypto_alg_available(const char *name, u32 flags)
 EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
 EXPORT_SYMBOL_GPL(crypto_free_tfm);
 EXPORT_SYMBOL_GPL(crypto_alg_available);
+
+int crypto_has_alg(const char *name, u32 type, u32 mask)
+{
+	int ret = 0;
+	struct crypto_alg *alg = crypto_alg_mod_lookup(name, type, mask);
+	
+	if (!IS_ERR(alg)) {
+		crypto_mod_put(alg);
+		ret = 1;
+	}
+	
+	return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_has_alg);