Instead of manually allocating a 'struct shash_desc' on the stack and
calling crypto_shash_digest(), switch to using the new helper function
crypto_shash_tfm_digest() which does this for us.
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
u8 *hash)
{
const struct ubifs_ch *ch = node;
u8 *hash)
{
const struct ubifs_ch *ch = node;
- SHASH_DESC_ON_STACK(shash, c->hash_tfm);
- int err;
-
- shash->tfm = c->hash_tfm;
- err = crypto_shash_digest(shash, node, le32_to_cpu(ch->len), hash);
- if (err < 0)
- return err;
- return 0;
+ return crypto_shash_tfm_digest(c->hash_tfm, node, le32_to_cpu(ch->len),
+ hash);
static int ubifs_hash_calc_hmac(const struct ubifs_info *c, const u8 *hash,
u8 *hmac)
{
static int ubifs_hash_calc_hmac(const struct ubifs_info *c, const u8 *hash,
u8 *hmac)
{
- SHASH_DESC_ON_STACK(shash, c->hmac_tfm);
- int err;
-
- shash->tfm = c->hmac_tfm;
-
- err = crypto_shash_digest(shash, hash, c->hash_len, hmac);
- if (err < 0)
- return err;
- return 0;
+ return crypto_shash_tfm_digest(c->hmac_tfm, hash, c->hash_len, hmac);
u8 calc[UBIFS_MAX_HASH_LEN];
const void *node = mst;
u8 calc[UBIFS_MAX_HASH_LEN];
const void *node = mst;
- SHASH_DESC_ON_STACK(shash, c->hash_tfm);
-
- shash->tfm = c->hash_tfm;
-
- crypto_shash_digest(shash, node + sizeof(struct ubifs_ch),
- UBIFS_MST_NODE_SZ - sizeof(struct ubifs_ch), calc);
+ crypto_shash_tfm_digest(c->hash_tfm, node + sizeof(struct ubifs_ch),
+ UBIFS_MST_NODE_SZ - sizeof(struct ubifs_ch),
+ calc);
if (ubifs_check_hash(c, expected, calc))
return -EPERM;
if (ubifs_check_hash(c, expected, calc))
return -EPERM;
return data == 0xFFFFFFFF;
}
return data == 0xFFFFFFFF;
}
-/* authenticate_sleb_hash and authenticate_sleb_hmac are split out for stack usage */
+/* authenticate_sleb_hash is split out for stack usage */
static int authenticate_sleb_hash(struct ubifs_info *c, struct shash_desc *log_hash, u8 *hash)
{
SHASH_DESC_ON_STACK(hash_desc, c->hash_tfm);
static int authenticate_sleb_hash(struct ubifs_info *c, struct shash_desc *log_hash, u8 *hash)
{
SHASH_DESC_ON_STACK(hash_desc, c->hash_tfm);
return crypto_shash_final(hash_desc, hash);
}
return crypto_shash_final(hash_desc, hash);
}
-static int authenticate_sleb_hmac(struct ubifs_info *c, u8 *hash, u8 *hmac)
-{
- SHASH_DESC_ON_STACK(hmac_desc, c->hmac_tfm);
-
- hmac_desc->tfm = c->hmac_tfm;
-
- return crypto_shash_digest(hmac_desc, hash, c->hash_len, hmac);
-}
-
/**
* authenticate_sleb - authenticate one scan LEB
* @c: UBIFS file-system description object
/**
* authenticate_sleb - authenticate one scan LEB
* @c: UBIFS file-system description object
- err = authenticate_sleb_hmac(c, hash, hmac);
+ err = crypto_shash_tfm_digest(c->hmac_tfm, hash,
+ c->hash_len, hmac);