X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=crypto%2Fapi.c;h=ba81221b3bef77ec1d64805aebf47f7c53bbc4a2;hb=8267adab9433593adb09d94626475c2a5921f111;hp=9975a7bd246c21d4d7e3152249ffefdb38812ee5;hpb=7b0bac64cd5b74d6f1147524c26216de13a501fd;p=safe%2Fjmp%2Flinux-2.6

diff --git a/crypto/api.c b/crypto/api.c
index 9975a7b..ba81221 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -215,8 +215,17 @@ struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask)
 	mask &= ~(CRYPTO_ALG_LARVAL | CRYPTO_ALG_DEAD);
 	type &= mask;
 
-	alg = try_then_request_module(crypto_alg_lookup(name, type, mask),
-				      name);
+	alg = crypto_alg_lookup(name, type, mask);
+	if (!alg) {
+		request_module("%s", name);
+
+		if (!((type ^ CRYPTO_ALG_NEED_FALLBACK) & mask &
+		      CRYPTO_ALG_NEED_FALLBACK))
+			request_module("%s-all", name);
+
+		alg = crypto_alg_lookup(name, type, mask);
+	}
+
 	if (alg)
 		return crypto_is_larval(alg) ? crypto_larval_wait(alg) : alg;
 
@@ -244,7 +253,7 @@ struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask)
 	struct crypto_alg *larval;
 	int ok;
 
-	if (!(mask & CRYPTO_ALG_TESTED)) {
+	if (!((type | mask) & CRYPTO_ALG_TESTED)) {
 		type |= CRYPTO_ALG_TESTED;
 		mask |= CRYPTO_ALG_TESTED;
 	}
@@ -453,8 +462,8 @@ err:
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_base);
 
-struct crypto_tfm *crypto_create_tfm(struct crypto_alg *alg,
-				     const struct crypto_type *frontend)
+void *crypto_create_tfm(struct crypto_alg *alg,
+			const struct crypto_type *frontend)
 {
 	char *mem;
 	struct crypto_tfm *tfm = NULL;
@@ -488,12 +497,33 @@ out_free_tfm:
 		crypto_shoot_alg(alg);
 	kfree(mem);
 out_err:
-	tfm = ERR_PTR(err);
+	mem = ERR_PTR(err);
 out:
-	return tfm;
+	return mem;
 }
 EXPORT_SYMBOL_GPL(crypto_create_tfm);
 
+struct crypto_alg *crypto_find_alg(const char *alg_name,
+				   const struct crypto_type *frontend,
+				   u32 type, u32 mask)
+{
+	struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask) =
+		crypto_alg_mod_lookup;
+
+	if (frontend) {
+		type &= frontend->maskclear;
+		mask &= frontend->maskclear;
+		type |= frontend->type;
+		mask |= frontend->maskset;
+
+		if (frontend->lookup)
+			lookup = frontend->lookup;
+	}
+
+	return lookup(alg_name, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_find_alg);
+
 /*
  *	crypto_alloc_tfm - Locate algorithm and allocate transform
  *	@alg_name: Name of algorithm
@@ -514,25 +544,16 @@ EXPORT_SYMBOL_GPL(crypto_create_tfm);
  *
  *	In case of error the return value is an error pointer.
  */
-struct crypto_tfm *crypto_alloc_tfm(const char *alg_name,
-				    const struct crypto_type *frontend,
-				    u32 type, u32 mask)
+void *crypto_alloc_tfm(const char *alg_name,
+		       const struct crypto_type *frontend, u32 type, u32 mask)
 {
-	struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask);
-	struct crypto_tfm *tfm;
+	void *tfm;
 	int err;
 
-	type &= frontend->maskclear;
-	mask &= frontend->maskclear;
-	type |= frontend->type;
-	mask |= frontend->maskset;
-
-	lookup = frontend->lookup ?: crypto_alg_mod_lookup;
-
 	for (;;) {
 		struct crypto_alg *alg;
 
-		alg = lookup(alg_name, type, mask);
+		alg = crypto_find_alg(alg_name, frontend, type, mask);
 		if (IS_ERR(alg)) {
 			err = PTR_ERR(alg);
 			goto err;
@@ -557,34 +578,31 @@ err:
 	return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
- 
+
 /*
- *	crypto_free_tfm - Free crypto transform
+ *	crypto_destroy_tfm - Free crypto transform
+ *	@mem: Start of tfm slab
  *	@tfm: Transform to free
  *
- *	crypto_free_tfm() frees up the transform and any associated resources,
+ *	This function frees up the transform and any associated resources,
  *	then drops the refcount on the associated algorithm.
  */
-void crypto_free_tfm(struct crypto_tfm *tfm)
+void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm)
 {
 	struct crypto_alg *alg;
-	int size;
 
-	if (unlikely(!tfm))
+	if (unlikely(!mem))
 		return;
 
 	alg = tfm->__crt_alg;
-	size = sizeof(*tfm) + alg->cra_ctxsize;
 
 	if (!tfm->exit && alg->cra_exit)
 		alg->cra_exit(tfm);
 	crypto_exit_ops(tfm);
 	crypto_mod_put(alg);
-	memset(tfm, 0, size);
-	kfree(tfm);
+	kzfree(mem);
 }
-
-EXPORT_SYMBOL_GPL(crypto_free_tfm);
+EXPORT_SYMBOL_GPL(crypto_destroy_tfm);
 
 int crypto_has_alg(const char *name, u32 type, u32 mask)
 {