[dpdk-dev] [PATCH] net/af_packet: prefer snprintf against strncpy
Ferruh Yigit
ferruh.yigit at intel.com
Thu May 4 13:16:59 CEST 2017
strncpy may left destination buffer not NULL terminated, switched using
snprintf to be sure destination buffer is NULL terminated.
Coverity issue: 1407495
Coverity issue: 1407498
Fixes: cc68ac4847bc ("net/af_packet: support MTU change")
Fixes: 218259590ea4 ("net/af_packet: support promiscuous")
Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
---
Cc: Chas Williams <ciwillia at brocade.com>
---
drivers/net/af_packet/rte_eth_af_packet.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/af_packet/rte_eth_af_packet.c b/drivers/net/af_packet/rte_eth_af_packet.c
index 6f6ba0c..68de45c 100644
--- a/drivers/net/af_packet/rte_eth_af_packet.c
+++ b/drivers/net/af_packet/rte_eth_af_packet.c
@@ -452,7 +452,7 @@ eth_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
if (s < 0)
return -EINVAL;
- strncpy(ifr.ifr_name, internals->if_name, IFNAMSIZ);
+ snprintf(ifr.ifr_name, IFNAMSIZ, "%s", internals->if_name);
ret = ioctl(s, SIOCSIFMTU, &ifr);
close(s);
@@ -472,7 +472,7 @@ eth_dev_change_flags(char *if_name, uint32_t flags, uint32_t mask)
if (s < 0)
return;
- strncpy(ifr.ifr_name, if_name, IFNAMSIZ);
+ snprintf(ifr.ifr_name, IFNAMSIZ, "%s", if_name);
if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0)
goto out;
ifr.ifr_flags &= mask;
--
2.9.3
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