1 files changed, 29 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/lib/if_indextoname.c b/mdk-stage1/dietlibc/lib/if_indextoname.c
new file mode 100644
index 000000000..e683755f6
--- /dev/null
+++ b/mdk-stage1/dietlibc/lib/if_indextoname.c
@@ -0,0 +1,29 @@
+#include <linux/if.h>
+#include <linux/net.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <sys/socket.h>
+
+#ifndef SOCK_DGRAM
+#define SOCK_DGRAM 2
+#endif
+
+char* if_indextoname(unsigned int interface,char* blub) {
+  struct ifreq ifr;
+  int fd;
+
+  fd=socket(AF_INET6,SOCK_DGRAM,0);
+  if (fd<0) fd=socket(AF_INET,SOCK_DGRAM,0);
+  ifr.ifr_ifindex=interface;
+  if (ioctl(fd,SIOCGIFNAME,&ifr)==0) {
+    int i;
+    close(fd);
+    for (i=0; i<IFNAMSIZ-1; i++)
+      if (!(blub[i]=ifr.ifr_name[i]))
+	return blub;
+    blub[i]=0;
+    return blub;
+  }
+  close(fd);
+  return 0;
+}