Thread (4 messages) 4 messages, 3 authors, 2021-03-04

Re: [PATCH 02/20] crypto: Manual replacement of the deprecated strlcpy() with return values

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2021-03-04 04:39:04
Also in: lkml

On Mon, Feb 22, 2021 at 04:12:13PM +0100, Romain Perier wrote:
quoted hunk ↗ jump to hunk
diff --git a/crypto/lrw.c b/crypto/lrw.c
index bcf09fbc750a..4d35f4439012 100644
--- a/crypto/lrw.c
+++ b/crypto/lrw.c
@@ -357,10 +357,10 @@ static int lrw_create(struct crypto_template *tmpl, struct rtattr **tb)
 	 * cipher name.
 	 */
 	if (!strncmp(cipher_name, "ecb(", 4)) {
-		unsigned len;
+		ssize_t len;
 
-		len = strlcpy(ecb_name, cipher_name + 4, sizeof(ecb_name));
-		if (len < 2 || len >= sizeof(ecb_name))
+		len = strscpy(ecb_name, cipher_name + 4, sizeof(ecb_name));
+		if (len == -E2BIG || len < 2)
len == -E2BIG is superfluous as len < 2 will catch it anyway.

Thanks,
-- 
Email: Herbert Xu [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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