This patch hard-codes CRYPTO_MAX_NAME in the user-space API to
64, which is the current value of CRYPTO_MAX_ALG_NAME. This patch
also replaces all remaining occurences of CRYPTO_MAX_ALG_NAME
in the user-space API with CRYPTO_MAX_NAME.
This way the user-space API will not be modified when we raise
the value of CRYPTO_MAX_ALG_NAME.
Furthermore, the code has been updated to handle names longer than
the user-space API. They will be truncated.
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
---
crypto/crypto_user.c | 18 +++++++++---------
include/uapi/linux/cryptouser.h | 10 +++++-----
2 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index a90404a..89acaab 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -83,7 +83,7 @@ static int crypto_report_cipher(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_cipher rcipher;
- strncpy(rcipher.type, "cipher", sizeof(rcipher.type));
+ strlcpy(rcipher.type, "cipher", sizeof(rcipher.type));
rcipher.blocksize = alg->cra_blocksize;
rcipher.min_keysize = alg->cra_cipher.cia_min_keysize;
@@ -102,7 +102,7 @@ static int crypto_report_comp(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_comp rcomp;
- strncpy(rcomp.type, "compression", sizeof(rcomp.type));
+ strlcpy(rcomp.type, "compression", sizeof(rcomp.type));
if (nla_put(skb, CRYPTOCFGA_REPORT_COMPRESS,
sizeof(struct crypto_report_comp), &rcomp))
goto nla_put_failure;
@@ -116,7 +116,7 @@ static int crypto_report_acomp(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_acomp racomp;
- strncpy(racomp.type, "acomp", sizeof(racomp.type));
+ strlcpy(racomp.type, "acomp", sizeof(racomp.type));
if (nla_put(skb, CRYPTOCFGA_REPORT_ACOMP,
sizeof(struct crypto_report_acomp), &racomp))
@@ -131,7 +131,7 @@ static int crypto_report_akcipher(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_akcipher rakcipher;
- strncpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
+ strlcpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
if (nla_put(skb, CRYPTOCFGA_REPORT_AKCIPHER,
sizeof(struct crypto_report_akcipher), &rakcipher))
@@ -146,7 +146,7 @@ static int crypto_report_kpp(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_kpp rkpp;
- strncpy(rkpp.type, "kpp", sizeof(rkpp.type));
+ strlcpy(rkpp.type, "kpp", sizeof(rkpp.type));
if (nla_put(skb, CRYPTOCFGA_REPORT_KPP,
sizeof(struct crypto_report_kpp), &rkpp))
@@ -160,10 +160,10 @@ static int crypto_report_kpp(struct sk_buff *skb, struct crypto_alg *alg)
static int crypto_report_one(struct crypto_alg *alg,
struct crypto_user_alg *ualg, struct sk_buff *skb)
{
- strncpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));
- strncpy(ualg->cru_driver_name, alg->cra_driver_name,
+ strlcpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));
+ strlcpy(ualg->cru_driver_name, alg->cra_driver_name,
sizeof(ualg->cru_driver_name));
- strncpy(ualg->cru_module_name, module_name(alg->cra_module),
+ strlcpy(ualg->cru_module_name, module_name(alg->cra_module),
sizeof(ualg->cru_module_name));
ualg->cru_type = 0;
@@ -176,7 +176,7 @@ static int crypto_report_one(struct crypto_alg *alg,
if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
struct crypto_report_larval rl;
- strncpy(rl.type, "larval", sizeof(rl.type));
+ strlcpy(rl.type, "larval", sizeof(rl.type));
if (nla_put(skb, CRYPTOCFGA_REPORT_LARVAL,
sizeof(struct crypto_report_larval), &rl))
goto nla_put_failure;
diff --git a/include/uapi/linux/cryptouser.h b/include/uapi/linux/cryptouser.h
index 11d21fc..b4def5c 100644
--- a/include/uapi/linux/cryptouser.h
+++ b/include/uapi/linux/cryptouser.h
@@ -31,7 +31,7 @@ enum {
#define CRYPTO_MSG_MAX (__CRYPTO_MSG_MAX - 1)
#define CRYPTO_NR_MSGTYPES (CRYPTO_MSG_MAX + 1 - CRYPTO_MSG_BASE)
-#define CRYPTO_MAX_NAME CRYPTO_MAX_ALG_NAME
+#define CRYPTO_MAX_NAME 64
/* Netlink message attributes. */
enum crypto_attr_type_t {
@@ -53,9 +53,9 @@ enum crypto_attr_type_t {
};
struct crypto_user_alg {
- char cru_name[CRYPTO_MAX_ALG_NAME];
- char cru_driver_name[CRYPTO_MAX_ALG_NAME];
- char cru_module_name[CRYPTO_MAX_ALG_NAME];
+ char cru_name[CRYPTO_MAX_NAME];
+ char cru_driver_name[CRYPTO_MAX_NAME];
+ char cru_module_name[CRYPTO_MAX_NAME];
__u32 cru_type;
__u32 cru_mask;
__u32 cru_refcnt;
@@ -73,7 +73,7 @@ struct crypto_report_hash {
};
struct crypto_report_cipher {
- char type[CRYPTO_MAX_ALG_NAME];
+ char type[CRYPTO_MAX_NAME];
unsigned int blocksize;
unsigned int min_keysize;
unsigned int max_keysize;
