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authorHerbert Xu <herbert@gondor.apana.org.au>2006-12-17 10:05:58 +1100
committerHerbert Xu <herbert@gondor.apana.org.au>2007-02-07 09:21:01 +1100
commit2e306ee016fd4750289e65c3b1856db569f1f3f2 (patch)
tree53ace6081967c640f052d53397250657af855c25 /crypto/algapi.c
parentf1ddcaf3393b7a3871809b97fae90fac841a1f39 (diff)
downloadlinux-2e306ee016fd4750289e65c3b1856db569f1f3f2.tar.gz
[CRYPTO] api: Add type-safe spawns
This patch allows spawns of specific types (e.g., cipher) to be allocated. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/algapi.c')
-rw-r--r--crypto/algapi.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c
index 69eb504721a..0f1abca1b98 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -377,7 +377,8 @@ void crypto_drop_spawn(struct crypto_spawn *spawn)
}
EXPORT_SYMBOL_GPL(crypto_drop_spawn);
-struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn)
+struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
+ u32 mask)
{
struct crypto_alg *alg;
struct crypto_alg *alg2;
@@ -396,10 +397,18 @@ struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn)
return ERR_PTR(-EAGAIN);
}
+ tfm = ERR_PTR(-EINVAL);
+ if (unlikely((alg->cra_flags ^ type) & mask))
+ goto out_put_alg;
+
tfm = __crypto_alloc_tfm(alg);
if (IS_ERR(tfm))
- crypto_mod_put(alg);
+ goto out_put_alg;
+
+ return tfm;
+out_put_alg:
+ crypto_mod_put(alg);
return tfm;
}
EXPORT_SYMBOL_GPL(crypto_spawn_tfm);