silence lint false positive (tapname == NULL)

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
rootless-containers · Jan 5, 2022 · dbf96f1 · dbf96f1
1 parent 0138605
commit dbf96f1
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/main.c b/main.c
@@ -83,6 +83,10 @@ static int open_tap(const char *tapname)
 {
     int fd;
     struct ifreq ifr;
+    if (tapname == NULL) {
+        fprintf(stderr, "tapname is NULL\n");
+        return -1;
+    }
     if ((fd = open("/dev/net/tun", O_RDWR)) < 0) {
         perror("open(\"/dev/net/tun\")");
         return fd;