1 files changed, 83 insertions, 0 deletions
diff --git a/src/nl-link-set.c b/src/nl-link-set.c
new file mode 100644
index 0000000..1872301
--- /dev/null
+++ b/src/nl-link-set.c
@@ -0,0 +1,83 @@
+/*
+ * src/nl-link-set.c     Set link attributes
+ *
+ *	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"
+
+static void print_usage(void)
+{
+	printf(
+	"Usage: nl-link-set <ifindex> <changes>\n"
+	"  changes := [dev DEV] [mtu MTU] [txqlen TXQLEN] [weight WEIGHT] [link LINK]\n"
+	"             [master MASTER] [qdisc QDISC] [addr ADDR] [broadcast BRD]\n"
+	"             [{ up | down }] [{ arp | noarp }] [{ promisc | nopromisc }]\n"
+	"             [{ dynamic | nodynamic }] [{ multicast | nomulticast }]\n"
+	"             [{ trailers | notrailers }] [{ allmulticast | noallmulticast }]\n");
+	exit(1);
+}
+
+#include "f_link.c"
+
+int main(int argc, char *argv[])
+{
+	struct nl_handle *nlh;
+	struct nl_cache *link_cache;
+	struct rtnl_link *link, *orig;
+	int err = 1, ifindex;
+
+	if (nltool_init(argc, argv) < 0)
+		return -1;
+
+	if (argc < 2 || !strcmp(argv[1], "-h"))
+		print_usage();
+
+	nlh = nltool_alloc_handle();
+	if (!nlh)
+		return -1;
+
+	link = rtnl_link_alloc();
+	if (!link)
+		goto errout;
+
+	if (nltool_connect(nlh, NETLINK_ROUTE) < 0)
+		goto errout_free;
+
+	link_cache = nltool_alloc_link_cache(nlh);
+	if (!link_cache)
+		goto errout_close;
+
+	ifindex = strtoul(argv[1], NULL, 0);
+
+	if (!(orig = rtnl_link_get(link_cache, ifindex))) {
+		fprintf(stderr, "Interface index %d does not exist\n", ifindex);
+		goto errout_cache;
+	}
+
+	get_filter(link, argc, argv, 2, link_cache);
+
+	if (rtnl_link_change(nlh, orig, link, 0) < 0) {
+		fprintf(stderr, "Unable to change link: %s\n", nl_geterror());
+		goto errout_put;
+	}
+
+	err = 0;
+
+errout_put:
+	rtnl_link_put(orig);
+errout_cache:
+	nl_cache_free(link_cache);
+errout_close:
+	nl_close(nlh);
+errout_free:
+	rtnl_link_put(link);
+errout:
+	nl_handle_destroy(nlh);
+	return err;
+}