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-rw-r--r--src/fastd.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/fastd.c b/src/fastd.c
index 392b6c4..3b8531f 100644
--- a/src/fastd.c
+++ b/src/fastd.c
@@ -283,7 +283,7 @@ static void init_tuntap(fastd_context *ctx) {
memset(&ifr, 0, sizeof(ifr));
if (ctx->conf->ifname)
- strncpy(ifr.ifr_name, ctx->conf->ifname, IFNAMSIZ);
+ strncpy(ifr.ifr_name, ctx->conf->ifname, IFNAMSIZ-1);
switch (ctx->conf->mode) {
case MODE_TAP:
@@ -302,7 +302,7 @@ static void init_tuntap(fastd_context *ctx) {
if (ioctl(ctx->tunfd, TUNSETIFF, &ifr) < 0)
exit_errno(ctx, "TUNSETIFF ioctl failed");
- ctx->ifname = strndup(ifr.ifr_name, IFNAMSIZ);
+ ctx->ifname = strndup(ifr.ifr_name, IFNAMSIZ-1);
int ctl_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (ctl_sock < 0)