This commit was generated by cvs2svn to compensate for changes in r786,

[libnl.git] / src / nl-monitor.c

diff --git a/src/nl-monitor.c b/src/nl-monitor.c
new file mode 100644 (file)
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;
+}