X-Git-Url: http://git.onelab.eu/?p=libnl.git;a=blobdiff_plain;f=src%2Fnl-monitor.c;fp=src%2Fnl-monitor.c;h=c08ed18fe377f8552325751cc670e9f027b146f2;hp=0000000000000000000000000000000000000000;hb=4cee2ecb3b8afa0637e6f5fe4c57985a4bc740ff;hpb=2df2fbe518d5a221ce6e3ee88a3fb23fb1b94b27

diff --git a/src/nl-monitor.c b/src/nl-monitor.c
new file mode 100644
index 0000000..c08ed18
--- /dev/null
+++ b/src/nl-monitor.c
@@ -0,0 +1,139 @@
+/*
+ * src/nl-monitor.c     Monitor events
+ *
+ *	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"
+#include <netlink/route/link.h>
+#include <netlink/route/addr.h>
+
+static void obj_input(struct nl_object *obj, void *arg)
+{
+	struct nl_dump_params dp = {
+		.dp_type = NL_DUMP_STATS,
+		.dp_fd = stdout,
+		.dp_dump_msgtype = 1,
+	};
+
+	nl_object_dump(obj, &dp);
+}
+
+static int event_input(struct nl_msg *msg, void *arg)
+{
+	if (nl_msg_parse(msg, &obj_input, NULL) < 0)
+		fprintf(stderr, "<<EVENT>> Unknown message type\n");
+
+	/* Exit nl_recvmsgs_def() and return to the main select() */
+	return NL_EXIT;
+}
+
+int main(int argc, char *argv[])
+{
+	struct nl_handle *nlh;
+	struct nl_cache *link_cache;
+	int err = 1;
+	int i, idx;
+
+	static const struct {
+		enum rtnetlink_groups gr_id;
+		const char* gr_name;
+	} known_groups[] = {
+		{ RTNLGRP_LINK, "link" },
+		{ RTNLGRP_NOTIFY, "notify" },
+		{ RTNLGRP_NEIGH, "neigh" },
+		{ RTNLGRP_TC, "tc" },
+		{ RTNLGRP_IPV4_IFADDR, "ipv4-ifaddr" },
+		{ RTNLGRP_IPV4_MROUTE, "ipv4-mroute" },
+		{ RTNLGRP_IPV4_ROUTE, "ipv4-route" },
+		{ RTNLGRP_IPV6_IFADDR, "ipv6-ifaddr" },
+		{ RTNLGRP_IPV6_MROUTE, "ipv6-mroute" },
+		{ RTNLGRP_IPV6_ROUTE, "ipv6-route" },
+		{ RTNLGRP_IPV6_IFINFO, "ipv6-ifinfo" },
+		{ RTNLGRP_DECnet_IFADDR, "decnet-ifaddr" },
+		{ RTNLGRP_DECnet_ROUTE, "decnet-route" },
+		{ RTNLGRP_IPV6_PREFIX, "ipv6-prefix" },
+		{ RTNLGRP_FIB_MAGIC, "fib-magic" },
+		{ RTNLGRP_NONE, NULL }
+	};
+
+	if (nltool_init(argc, argv) < 0)
+		return -1;
+
+	nlh = nl_handle_alloc_nondefault(nltool_cbset);
+	if (nlh == NULL)
+		return -1;
+
+	nl_disable_sequence_check(nlh);
+
+	nl_cb_set(nl_handle_get_cb(nlh), NL_CB_VALID, NL_CB_CUSTOM,
+		  event_input, NULL);
+
+	if (argc > 1 && !strcasecmp(argv[1], "-h")) {
+		printf("Usage: nl-monitor [<groups>]\n");
+
+		printf("Known groups:");
+		for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++)
+			printf(" %s", known_groups[i].gr_name);
+		printf("\n");
+		return 2;
+	}
+
+	nl_join_groups(nlh, RTMGRP_LINK);
+
+	if (nl_connect(nlh, NETLINK_ROUTE) < 0) {
+		fprintf(stderr, "%s\n", nl_geterror());
+		goto errout;
+	}
+
+	for (idx = 1; argc > idx; idx++) {
+		for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++) {
+			if (!strcmp(argv[idx], known_groups[i].gr_name)) {
+
+				if (nl_join_group(nlh, known_groups[i].gr_id) < 0) {
+					fprintf(stderr, "%s: %s\n", argv[idx], nl_geterror());
+					goto errout;
+				}
+
+				break;
+			}
+		}
+		if (known_groups[i].gr_id == RTNLGRP_NONE)
+			fprintf(stderr, "Warning: Unknown group: %s\n", argv[idx]);
+	}
+
+	if ((link_cache = rtnl_link_alloc_cache(nlh)) == NULL) {
+		fprintf(stderr, "%s\n", nl_geterror());
+		goto errout_close;
+	}
+
+	nl_cache_mngt_provide(link_cache);
+
+	while (1) {
+		fd_set rfds;
+		int fd, retval;
+
+		fd = nl_handle_get_fd(nlh);
+
+		FD_ZERO(&rfds);
+		FD_SET(fd, &rfds);
+		/* wait for an incoming message on the netlink socket */
+		retval = select(fd+1, &rfds, NULL, NULL, NULL);
+
+		if (retval) {
+			/* FD_ISSET(fd, &rfds) will be true */
+			nl_recvmsgs_def(nlh);
+		}
+	}
+
+	nl_cache_free(link_cache);
+errout_close:
+	nl_close(nlh);
+errout:
+	return err;
+}