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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2006-12-17 10:05:58 +1100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2007-02-07 09:21:01 +1100 |
| commit | 2e306ee016fd4750289e65c3b1856db569f1f3f2 (patch) | |
| tree | 53ace6081967c640f052d53397250657af855c25 /crypto/algapi.c | |
| parent | f1ddcaf3393b7a3871809b97fae90fac841a1f39 (diff) | |
| download | linux-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.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c index 69eb504721a4..0f1abca1b98c 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); |