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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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11
crypto/lrw.c
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@@ -201,21 +201,22 @@ static int decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
static int init_tfm(struct crypto_tfm *tfm)
{
struct crypto_cipher *cipher;
struct crypto_instance *inst = (void *)tfm->__crt_alg;
struct crypto_spawn *spawn = crypto_instance_ctx(inst);
struct priv *ctx = crypto_tfm_ctx(tfm);
u32 *flags = &tfm->crt_flags;
tfm = crypto_spawn_tfm(spawn);
if (IS_ERR(tfm))
return PTR_ERR(tfm);
cipher = crypto_spawn_cipher(spawn);
if (IS_ERR(cipher))
return PTR_ERR(cipher);
if (crypto_tfm_alg_blocksize(tfm) != 16) {
if (crypto_cipher_blocksize(cipher) != 16) {
*flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;
return -EINVAL;
}
ctx->child = crypto_cipher_cast(tfm);
ctx->child = cipher;
return 0;
}