From b9f76dddb1f9f70e008b982381bbc9a67c9b8c66 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Thu, 2 Jan 2020 19:58:45 -0800 Subject: crypto: skcipher - pass instance to crypto_grab_skcipher() Initializing a crypto_skcipher_spawn currently requires: 1. Set spawn->base.inst to point to the instance. 2. Call crypto_grab_skcipher(). But there's no reason for these steps to be separate, and in fact this unneeded complication has caused at least one bug, the one fixed by commit 6db43410179b ("crypto: adiantum - initialize crypto_spawn::inst") So just make crypto_grab_skcipher() take the instance as an argument. To keep the function calls from getting too unwieldy due to this extra argument, also introduce a 'mask' variable into the affected places which weren't already using one. Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- crypto/lrw.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'crypto/lrw.c') diff --git a/crypto/lrw.c b/crypto/lrw.c index 8ebd79276c78..63c485c0d8a6 100644 --- a/crypto/lrw.c +++ b/crypto/lrw.c @@ -301,6 +301,7 @@ static int create(struct crypto_template *tmpl, struct rtattr **tb) struct skcipher_alg *alg; const char *cipher_name; char ecb_name[CRYPTO_MAX_ALG_NAME]; + u32 mask; int err; algt = crypto_get_attr_type(tb); @@ -310,6 +311,8 @@ static int create(struct crypto_template *tmpl, struct rtattr **tb) if ((algt->type ^ CRYPTO_ALG_TYPE_SKCIPHER) & algt->mask) return -EINVAL; + mask = crypto_requires_sync(algt->type, algt->mask); + cipher_name = crypto_attr_alg_name(tb[1]); if (IS_ERR(cipher_name)) return PTR_ERR(cipher_name); @@ -320,19 +323,17 @@ static int create(struct crypto_template *tmpl, struct rtattr **tb) spawn = skcipher_instance_ctx(inst); - crypto_set_skcipher_spawn(spawn, skcipher_crypto_instance(inst)); - err = crypto_grab_skcipher(spawn, cipher_name, 0, - crypto_requires_sync(algt->type, - algt->mask)); + err = crypto_grab_skcipher(spawn, skcipher_crypto_instance(inst), + cipher_name, 0, mask); if (err == -ENOENT) { err = -ENAMETOOLONG; if (snprintf(ecb_name, CRYPTO_MAX_ALG_NAME, "ecb(%s)", cipher_name) >= CRYPTO_MAX_ALG_NAME) goto err_free_inst; - err = crypto_grab_skcipher(spawn, ecb_name, 0, - crypto_requires_sync(algt->type, - algt->mask)); + err = crypto_grab_skcipher(spawn, + skcipher_crypto_instance(inst), + ecb_name, 0, mask); } if (err) -- cgit v1.2.3-59-g8ed1b