X-Git-Url: http://git.onelab.eu/?p=libnl.git;a=blobdiff_plain;f=src%2Fnl-link-name2ifindex.c;fp=src%2Fnl-link-name2ifindex.c;h=6ed146fea5bec7b0dbf35c6beebab34fa8b8e1c4;hp=0000000000000000000000000000000000000000;hb=4cee2ecb3b8afa0637e6f5fe4c57985a4bc740ff;hpb=2df2fbe518d5a221ce6e3ee88a3fb23fb1b94b27

diff --git a/src/nl-link-name2ifindex.c b/src/nl-link-name2ifindex.c
new file mode 100644
index 0000000..6ed146f
--- /dev/null
+++ b/src/nl-link-name2ifindex.c
@@ -0,0 +1,51 @@
+/*
+ * src/nl-link-name2ifindex.c     Transform a interface name to its index
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation version 2.1
+ *	of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#include "utils.h"
+
+int main(int argc, char *argv[])
+{
+	struct nl_handle *nlh;
+	struct nl_cache *link_cache;
+	int err = -1, ifindex;
+
+	if (nltool_init(argc, argv) < 0)
+		return -1;
+
+	if (argc < 2 || !strcmp(argv[1], "-h")) {
+		printf("Usage: nl-link-name2ifindex <name>\n");
+		return -1;
+	}
+
+	nlh = nl_handle_alloc_nondefault(nltool_cbset);
+	if (!nlh)
+		return -1;
+
+	if (nltool_connect(nlh, NETLINK_ROUTE) < 0)
+		goto errout;
+
+	link_cache = nltool_alloc_link_cache(nlh);
+	if (!link_cache)
+		goto errout;
+
+	if ((ifindex = rtnl_link_name2i(link_cache, argv[1])) == RTNL_LINK_NOT_FOUND)
+		fprintf(stderr, "Interface %s does not exist\n", argv[1]);
+	else
+		printf("%d\n", ifindex);
+
+	nl_cache_free(link_cache);
+	err = 0;
+errout:
+	nl_close(nlh);
+	nl_handle_destroy(nlh);
+
+	return err;
+}