cleanup

1 files changed, 8 insertions, 8 deletions

diff --git a/src/fnet/interface.c b/src/fnet/interface.c
index f3e9a8993..283c6d312 100644
--- a/src/fnet/interface.c
+++ b/src/fnet/interface.c
@@ -58,7 +58,7 @@ void net_bridge_add_interface(const char *bridge, const char *dev) {
                 errExit("socket");
 
         memset(&ifr, 0, sizeof(ifr));
-        strncpy(ifr.ifr_name, bridge, IFNAMSIZ);
+        strncpy(ifr.ifr_name, bridge, IFNAMSIZ - 1);
 #ifdef SIOCBRADDIF
         ifr.ifr_ifindex = ifindex;
         err = ioctl(sock, SIOCBRADDIF, &ifr);
@@ -90,7 +90,7 @@ void net_if_up(const char *ifname) {
         // get the existing interface flags
         struct ifreq ifr;
         memset(&ifr, 0, sizeof(ifr));
-        strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+        strncpy(ifr.ifr_name, ifname, IFNAMSIZ - 1);
         ifr.ifr_addr.sa_family = AF_INET;
 
         // read the existing flags
@@ -135,7 +135,7 @@ int net_get_mtu(const char *ifname) {
 
         memset(&ifr, 0, sizeof(ifr));
         ifr.ifr_addr.sa_family = AF_INET;
-        strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+        strncpy(ifr.ifr_name, ifname, IFNAMSIZ - 1);
         if (ioctl(s, SIOCGIFMTU, (caddr_t)&ifr) == 0)
                 mtu = ifr.ifr_mtu;
         close(s);
@@ -154,7 +154,7 @@ void net_set_mtu(const char *ifname, int mtu) {
 
         memset(&ifr, 0, sizeof(ifr));
         ifr.ifr_addr.sa_family = AF_INET;
-        strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+        strncpy(ifr.ifr_name, ifname, IFNAMSIZ - 1);
         ifr.ifr_mtu = mtu;
         if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) != 0) {
                 if (!arg_quiet)
@@ -238,7 +238,7 @@ int net_get_mac(const char *ifname, unsigned char mac[6]) {
                 errExit("socket");
 
         memset(&ifr, 0, sizeof(ifr));
-        strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+        strncpy(ifr.ifr_name, ifname, IFNAMSIZ - 1);
         ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
 
         if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1)
@@ -258,7 +258,7 @@ void net_if_ip(const char *ifname, uint32_t ip, uint32_t mask, int mtu) {
 
         struct ifreq ifr;
         memset(&ifr, 0, sizeof(ifr));
-        strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+        strncpy(ifr.ifr_name, ifname, IFNAMSIZ - 1);
         ifr.ifr_addr.sa_family = AF_INET;
 
         ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr = htonl(ip);
@@ -292,7 +292,7 @@ int net_if_mac(const char *ifname, const unsigned char mac[6]) {
                 errExit("socket");
 
         memset(&ifr, 0, sizeof(ifr));
-        strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+        strncpy(ifr.ifr_name, ifname, IFNAMSIZ - 1);
         ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
         memcpy(ifr.ifr_hwaddr.sa_data, mac, 6);
 
@@ -350,7 +350,7 @@ void net_if_ip6(const char *ifname, const char *addr6) {
         // find interface index
         struct ifreq ifr;
         memset(&ifr, 0, sizeof(ifr));
-        strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+        strncpy(ifr.ifr_name, ifname, IFNAMSIZ - 1);
         ifr.ifr_addr.sa_family = AF_INET;
         if (ioctl(sock, SIOGIFINDEX, &ifr) < 0) {
                 perror("ioctl SIOGIFINDEX");