[PATCH] crypto: ccree - replace snprintf("%s") with strscpy

[Thorsten Blum]

Replace snprintf("%s") with the faster and more direct strscpy().

In cc_aead.c, group the includes while at it.

Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxx>
---
 drivers/crypto/ccree/cc_aead.c   |  9 ++++-----
 drivers/crypto/ccree/cc_cipher.c |  7 +++----
 drivers/crypto/ccree/cc_hash.c   | 13 +++++--------
 3 files changed, 12 insertions(+), 17 deletions(-)

diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index 81533681f7fb..088c4603047f 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -3,11 +3,12 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/rtnetlink.h>
+#include <linux/string.h>
 #include <crypto/algapi.h>
 #include <crypto/internal/aead.h>
 #include <crypto/authenc.h>
 #include <crypto/gcm.h>
-#include <linux/rtnetlink.h>
 #include <crypto/internal/des.h>
 #include "cc_driver.h"
 #include "cc_buffer_mgr.h"
@@ -2569,11 +2570,9 @@ static struct cc_crypto_alg *cc_create_aead_alg(struct cc_alg_template *tmpl,
 
 	alg = &tmpl->template_aead;
 
-	if (snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s",
-		     tmpl->name) >= CRYPTO_MAX_ALG_NAME)
+	if (strscpy(alg->base.cra_name, tmpl->name) < 0)
 		return ERR_PTR(-EINVAL);
-	if (snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
-		     tmpl->driver_name) >= CRYPTO_MAX_ALG_NAME)
+	if (strscpy(alg->base.cra_driver_name, tmpl->driver_name) < 0)
 		return ERR_PTR(-EINVAL);
 
 	alg->base.cra_module = THIS_MODULE;
diff --git a/drivers/crypto/ccree/cc_cipher.c b/drivers/crypto/ccree/cc_cipher.c
index e2cbfdf7a0e4..5339b3796c80 100644
--- a/drivers/crypto/ccree/cc_cipher.c
+++ b/drivers/crypto/ccree/cc_cipher.c
@@ -3,6 +3,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/string.h>
 #include <crypto/algapi.h>
 #include <crypto/internal/skcipher.h>
 #include <crypto/internal/des.h>
@@ -1386,11 +1387,9 @@ static struct cc_crypto_alg *cc_create_alg(const struct cc_alg_template *tmpl,
 
 	memcpy(alg, &tmpl->template_skcipher, sizeof(*alg));
 
-	if (snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s",
-		     tmpl->name) >= CRYPTO_MAX_ALG_NAME)
+	if (strscpy(alg->base.cra_name, tmpl->name) < 0)
 		return ERR_PTR(-EINVAL);
-	if (snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
-		     tmpl->driver_name) >= CRYPTO_MAX_ALG_NAME)
+	if (strscpy(alg->base.cra_driver_name, tmpl->driver_name) < 0)
 		return ERR_PTR(-EINVAL);
 
 	alg->base.cra_module = THIS_MODULE;
diff --git a/drivers/crypto/ccree/cc_hash.c b/drivers/crypto/ccree/cc_hash.c
index c6d085c8ff79..e090692e4371 100644
--- a/drivers/crypto/ccree/cc_hash.c
+++ b/drivers/crypto/ccree/cc_hash.c
@@ -3,6 +3,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/string.h>
 #include <crypto/algapi.h>
 #include <crypto/hash.h>
 #include <crypto/md5.h>
@@ -1834,16 +1835,12 @@ static struct cc_hash_alg *cc_alloc_hash_alg(struct cc_hash_template *template,
 	alg = &halg->halg.base;
 
 	if (keyed) {
-		snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
-			 template->mac_name);
-		snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
-			 template->mac_driver_name);
+		strscpy(alg->cra_name, template->mac_name);
+		strscpy(alg->cra_driver_name, template->mac_driver_name);
 	} else {
 		halg->setkey = NULL;
-		snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
-			 template->name);
-		snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
-			 template->driver_name);
+		strscpy(alg->cra_name, template->name);
+		strscpy(alg->cra_driver_name, template->driver_name);
 	}
 	alg->cra_module = THIS_MODULE;
 	alg->cra_ctxsize = sizeof(struct cc_hash_ctx) + crypto_dma_padding();