slcan_attach: Print the name of the assigned netdevice after attaching the tty.

diff --git a/slcan_attach.c b/slcan_attach.c
index ed6afc7f2bc2bb19f683a6fae46e16784b0a74df..458bd5032de470f9e49387d86574c440dc7475e4 100644 (file)
--- a/slcan_attach.c
+++ b/slcan_attach.c
@@ -52,6 +52,7 @@
 #include <unistd.h>
 #include <getopt.h>
 #include <sys/ioctl.h>
+#include <net/if.h>
 
 #define LDISC_N_SLCAN 17 /* default slcan line discipline since Kernel 2.6.25 */
 
@@ -82,7 +83,7 @@ int main(int argc, char **argv)
        int send_close = 0;
        char *speed = NULL;
        char *btr = NULL;
-       char buf[10];
+       char buf[IFNAMSIZ+1];
        char *tty;
        int opt;
 
@@ -155,9 +156,15 @@ int main(int argc, char **argv)
                }
 
                if (ioctl (fd, TIOCSETD, &ldisc) < 0) {
-                       perror("ioctl");
+                       perror("ioctl TIOCSETD");
                        exit(1);
                }
+
+               if (ioctl (fd, SIOCGIFNAME, buf) < 0) {
+                       perror("ioctl SIOCGIFNAME");
+                       exit(1);
+               } else
+                       printf("attached tty %s to netdevice %s\n", tty, buf);
        }
 
        if (waitkey) {