1 files changed, 40 insertions, 0 deletions
diff --git a/libc/inet/if_nametoindex.c b/libc/inet/if_nametoindex.c
new file mode 100644
index 000000000..40818aad9
--- /dev/null
+++ b/libc/inet/if_nametoindex.c
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright (C) 1998  Kenneth Albanowski <kjahds@kjahds.com>,
+ *                     The Silver Hammer Group, Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ */
+#define __FORCE_GLIBC
+#include <features.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+unsigned int if_nametoindex(const char* blub) {
+	struct ifreq ifr;
+	int fd;
+	char *tmp;
+	int len=sizeof(ifr.ifr_name);
+
+#ifdef __UCLIBC_HAS_IPV6__
+	fd=socket(AF_INET6,SOCK_DGRAM,0);
+	if (fd<0)
+#endif /* __UCLIBC_HAS_IPV6__ */
+		fd=socket(AF_INET,SOCK_DGRAM,0);
+
+	for (tmp=ifr.ifr_name; len>0; --len) {
+		if ((*tmp++ = *blub++)==0) break;
+	}
+
+	if (ioctl(fd,SIOCGIFINDEX,&ifr)==0) {
+		close(fd);
+		return ifr.ifr_ifindex;
+	}
+	close(fd);
+	return 0;
+}