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[CRYPTO] api: Add type-safe spawns

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This patch allows spawns of specific types (e.g., cipher) to be allocated.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
2006-12-17 10:05:58 +11:00
parent f1ddcaf339
commit 2e306ee016
8 changed files with 61 additions and 28 deletions
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13
crypto/algapi.c
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@@ -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;
@@ -396,11 +397,19 @@ 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);