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crypto: use 2-arg strscpy where destination size is known

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To simplify the code, drop explicit and hard-coded size arguments from
strscpy() where the destination buffer has a fixed size and strscpy()
can automatically determine it using sizeof().

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Thorsten Blum
2026-07-05 13:19:52 +08:00
committed by Herbert Xu
parent 3a5834db2b
commit cae575fc09
6 changed files with 10 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files
crypto/api.c
+1 -1
View File
@@ -116,7 +116,7 @@ struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask)
larval->alg.cra_priority = -1;
larval->alg.cra_destroy = crypto_larval_destroy;
strscpy(larval->alg.cra_name, name, CRYPTO_MAX_ALG_NAME);
strscpy(larval->alg.cra_name, name);
init_completion(&larval->completion);
return larval;
crypto/crypto_user.c
+4 -5
View File
@@ -11,6 +11,7 @@
#include <linux/cryptouser.h>
#include <linux/sched.h>
#include <linux/security.h>
#include <linux/string.h>
#include <net/netlink.h>
#include <net/net_namespace.h>
#include <net/sock.h>
@@ -87,11 +88,9 @@ static int crypto_report_one(struct crypto_alg *alg,
{
memset(ualg, 0, sizeof(*ualg));
strscpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));
strscpy(ualg->cru_driver_name, alg->cra_driver_name,
sizeof(ualg->cru_driver_name));
strscpy(ualg->cru_module_name, module_name(alg->cra_module),
sizeof(ualg->cru_module_name));
strscpy(ualg->cru_name, alg->cra_name);
strscpy(ualg->cru_driver_name, alg->cra_driver_name);
strscpy(ualg->cru_module_name, module_name(alg->cra_module));
ualg->cru_type = 0;
ualg->cru_mask = 0;
crypto/hctr2.c
+1 -2
View File
@@ -354,8 +354,7 @@ static int hctr2_create_common(struct crypto_template *tmpl, struct rtattr **tb,
err = -EINVAL;
if (strncmp(xctr_alg->base.cra_name, "xctr(", 5))
goto err_free_inst;
len = strscpy(blockcipher_name, xctr_alg->base.cra_name + 5,
sizeof(blockcipher_name));
len = strscpy(blockcipher_name, xctr_alg->base.cra_name + 5);
if (len < 1)
goto err_free_inst;
if (blockcipher_name[len - 1] != ')')
crypto/lrw.c
+1 -1
View File
@@ -359,7 +359,7 @@ static int lrw_create(struct crypto_template *tmpl, struct rtattr **tb)
if (!memcmp(cipher_name, "ecb(", 4)) {
int len;
len = strscpy(ecb_name, cipher_name + 4, sizeof(ecb_name));
len = strscpy(ecb_name, cipher_name + 4);
if (len < 2)
goto err_free_inst;
crypto/lskcipher.c
+1 -2
View File
@@ -528,8 +528,7 @@ struct lskcipher_instance *lskcipher_alloc_instance_simple(
int len;
err = -EINVAL;
len = strscpy(ecb_name, &cipher_alg->co.base.cra_name[4],
sizeof(ecb_name));
len = strscpy(ecb_name, &cipher_alg->co.base.cra_name[4]);
if (len < 2)
goto err_free_inst;
crypto/xts.c
+2 -1
View File
@@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <crypto/xts.h>
#include <crypto/b128ops.h>
@@ -400,7 +401,7 @@ static int xts_create(struct crypto_template *tmpl, struct rtattr **tb)
if (!memcmp(cipher_name, "ecb(", 4)) {
int len;
len = strscpy(name, cipher_name + 4, sizeof(name));
len = strscpy(name, cipher_name + 4);
if (len < 2)
goto err_free_inst;