linux-kernel - [RFC PATCH v1 03/12] crypto: Replace strstarts() by str_has

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Date:   Fri,  4 Dec 2020 18:03:09 +0100
From:   laniel_francis@...vacyrequired.com
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>
Cc:     Francis Laniel <laniel_francis@...vacyrequired.com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH v1 03/12] crypto: Replace strstarts() by str_has_prefix().

From: Francis Laniel <laniel_francis@...vacyrequired.com>

The two functions indicates if a string begins with a given prefix.
The only difference is that strstarts() returns a bool while str_has_prefix()
returns the length of the prefix if the string begins with it or 0 otherwise.

Signed-off-by: Francis Laniel <laniel_francis@...vacyrequired.com>
---
 crypto/essiv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/essiv.c b/crypto/essiv.c
index d012be23d496..f85d4416891f 100644
--- a/crypto/essiv.c
+++ b/crypto/essiv.c
@@ -504,7 +504,7 @@ static int essiv_create(struct crypto_template *tmpl, struct rtattr **tb)
 			goto out_free_inst;
 		aead_alg = crypto_spawn_aead_alg(&ictx->u.aead_spawn);
 		block_base = &aead_alg->base;
-		if (!strstarts(block_base->cra_name, "authenc(")) {
+		if (!str_has_prefix(block_base->cra_name, "authenc(")) {
 			pr_warn("Only authenc() type AEADs are supported by ESSIV\n");
 			err = -EINVAL;
 			goto out_drop_skcipher;
-- 
2.20.1