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xt_pknock: use kzalloc

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Replace some instances of kmalloc + memset.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
This commit is contained in:
Jeremy Sowden
2020-10-25 14:15:57 +01:00
committed by Jan Engelhardt
parent b3a3f2e91b
commit 82379e8ec1
1 changed files with 4 additions and 14 deletions
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18
extensions/pknock/xt_pknock.c
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@@ -450,13 +450,11 @@ add_rule(struct xt_pknock_mtinfo *info)
return true;
}
rule = kmalloc(sizeof(*rule), GFP_KERNEL);
rule = kzalloc(sizeof(*rule), GFP_KERNEL);
if (rule == NULL)
return false;
INIT_LIST_HEAD(&rule->head);
memset(rule->rule_name, 0, sizeof(rule->rule_name));
strncpy(rule->rule_name, info->rule_name, info->rule_name_len);
rule->rule_name_len = info->rule_name_len;
@@ -681,12 +679,9 @@ msg_to_userspace_nl(const struct xt_pknock_mtinfo *info,
struct cn_msg *m;
struct xt_pknock_nl_msg msg;
m = kmalloc(sizeof(*m) + sizeof(msg), GFP_ATOMIC);
m = kzalloc(sizeof(*m) + sizeof(msg), GFP_ATOMIC);
if (m == NULL)
return false;
memset(m, 0, sizeof(*m) + sizeof(msg));
m->seq = 0;
m->len = sizeof(msg);
msg.peer_ip = peer->ip;
@@ -731,7 +726,7 @@ static bool
has_secret(const unsigned char *secret, unsigned int secret_len, uint32_t ipsrc,
const unsigned char *payload, unsigned int payload_len)
{
char result[64]; // 64 bytes * 8 = 512 bits
char result[64] = ""; // 64 bytes * 8 = 512 bits
char *hexresult;
unsigned int hexa_size;
int ret;
@@ -751,14 +746,9 @@ has_secret(const unsigned char *secret, unsigned int secret_len, uint32_t ipsrc,
/* + 1 cause we MUST add NULL in the payload */
if (payload_len != hexa_size + 1)
return false;
hexresult = kmalloc(hexa_size, GFP_ATOMIC);
hexresult = kzalloc(hexa_size, GFP_ATOMIC);
if (hexresult == NULL)
return false;
memset(result, 0, sizeof(result));
memset(hexresult, 0, hexa_size);
epoch_min = get_seconds() / 60;
ret = crypto_shash_setkey(crypto.tfm, secret, secret_len);