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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-12-07 20:18:17 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-01-11 08:16:40 +1100 |
| commit | 68b6c7d6919be7c732fc6229c55e35d0166e9258 (patch) | |
| tree | 137eabe7eaf127c2f1460490733dee415aa7b339 | |
| parent | 551a09a7a954f720067f207657bbbd26a3fe156a (diff) | |
| download | linux-3.10-68b6c7d6919be7c732fc6229c55e35d0166e9258.tar.gz linux-3.10-68b6c7d6919be7c732fc6229c55e35d0166e9258.tar.bz2 linux-3.10-68b6c7d6919be7c732fc6229c55e35d0166e9258.zip | |
[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: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/algapi.c | 18 | ||||
| -rw-r--r-- | include/crypto/algapi.h | 1 |
2 files changed, 17 insertions, 2 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c index 08eca6da1d5..e65cb50cf4a 100644 --- a/crypto/algapi.c +++ b/crypto/algapi.c @@ -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); diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 2cdb227fc39..726a765e5ec 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -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, |