Commit 68b6c7d6 authored by Herbert Xu's avatar Herbert Xu
Browse files

[CRYPTO] api: Add crypto_attr_alg_name 



This patch adds a new helper crypto_attr_alg_name which is basically the
first half of crypto_attr_alg.  That is, it returns an algorithm name
parameter as a string without looking it up.  The caller can then look it
up immediately or defer it until later.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 551a09a7

crypto/algapi.c

+16 −2
Original line number Diff line number Diff line
@@ -472,7 +472,7 @@ int crypto_check_attr_type(struct rtattr **tb, u32 type) 
}

EXPORT_SYMBOL_GPL(crypto_check_attr_type);



struct crypto_alg *crypto_attr_alg(struct rtattr *rta, u32 type, u32 mask)

const char *crypto_attr_alg_name(struct rtattr *rta)

{

	struct crypto_attr_alg *alga;
@@ -486,7 +486,21 @@ struct crypto_alg *crypto_attr_alg(struct rtattr *rta, u32 type, u32 mask) 
	alga = RTA_DATA(rta);

	alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0;



	return crypto_alg_mod_lookup(alga->name, type, mask);

	return alga->name;

}

EXPORT_SYMBOL_GPL(crypto_attr_alg_name);



struct crypto_alg *crypto_attr_alg(struct rtattr *rta, u32 type, u32 mask)

{

	const char *name;

	int err;



	name = crypto_attr_alg_name(rta);

	err = PTR_ERR(name);

	if (IS_ERR(name))

		return ERR_PTR(err);



	return crypto_alg_mod_lookup(name, type, mask);

}

EXPORT_SYMBOL_GPL(crypto_attr_alg);

include/crypto/algapi.h

+1 −0
Original line number Diff line number Diff line
@@ -113,6 +113,7 @@ struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, 


struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb);

int crypto_check_attr_type(struct rtattr **tb, u32 type);

const char *crypto_attr_alg_name(struct rtattr *rta);

struct crypto_alg *crypto_attr_alg(struct rtattr *rta, u32 type, u32 mask);

int crypto_attr_u32(struct rtattr *rta, u32 *num);

struct crypto_instance *crypto_alloc_instance(const char *name,

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