networkd-wait-online: track links

[elogind.git] / src / network / networkd-wait-online-link.c

diff --git a/src/network/networkd-wait-online-link.c b/src/network/networkd-wait-online-link.c
new file mode 100644 (file)
index 0000000..9dc95f5
--- /dev/null
+++ b/src/network/networkd-wait-online-link.c
@@ -0,0 +1,156 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2014 Lennart Poettering
+  Copyright 2014 Tom Gundersen
+
+  systemd 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; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <net/if.h>
+
+#include "sd-network.h"
+#include "strv.h"
+
+#include "networkd-wait-online-link.h"
+
+int link_new(Manager *m, Link **ret, int ifindex, const char *ifname) {
+        _cleanup_(link_freep) Link *l = NULL;
+        int r;
+
+        assert(m);
+        assert(ifindex > 0);
+
+        r = hashmap_ensure_allocated(&m->links, NULL, NULL);
+        if (r < 0)
+                return r;
+
+        r = hashmap_ensure_allocated(&m->links_by_name,
+                                     string_hash_func, string_compare_func);
+        if (r < 0)
+                return r;
+
+        l = new0(Link, 1);
+        if (!l)
+                return -ENOMEM;
+
+        l->manager = m;
+
+        l->ifname = strdup(ifname);
+        if (!l->ifname)
+                return -ENOMEM;
+
+        r = hashmap_put(m->links_by_name, l->ifname, l);
+        if (r < 0)
+                return r;
+
+        l->ifindex = ifindex;
+
+        r = hashmap_put(m->links, INT_TO_PTR(ifindex), l);
+        if (r < 0)
+                return r;
+
+        if (ret)
+                *ret = l;
+        l = NULL;
+
+        return 0;
+}
+
+Link *link_free(Link *l) {
+
+        if (!l)
+                return NULL;
+
+        if (l->manager) {
+                hashmap_remove(l->manager->links, INT_TO_PTR(l->ifindex));
+                hashmap_remove(l->manager->links_by_name, l->ifname);
+        }
+
+        free(l->ifname);
+        free(l);
+        return NULL;
+ }
+
+int link_update_rtnl(Link *l, sd_rtnl_message *m) {
+        char *ifname;
+        int r;
+
+        assert(l);
+        assert(l->manager);
+        assert(m);
+
+        r = sd_rtnl_message_link_get_flags(m, &l->flags);
+        if (r < 0)
+                return r;
+
+        r = sd_rtnl_message_read_string(m, IFLA_IFNAME, &ifname);
+        if (r < 0)
+                return r;
+
+        if (!streq(l->ifname, ifname)) {
+                char *new_ifname;
+
+                new_ifname = strdup(ifname);
+                if (!new_ifname)
+                        return -ENOMEM;
+
+                hashmap_remove(l->manager->links_by_name, l->ifname);
+                free(l->ifname);
+                l->ifname = new_ifname;
+
+                r = hashmap_put(l->manager->links_by_name, l->ifname, l);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+int link_update_monitor(Link *l) {
+        assert(l);
+
+        free(l->operational_state);
+        l->operational_state = NULL;
+
+        sd_network_get_link_operational_state(l->ifindex, &l->operational_state);
+
+        free(l->state);
+        l->state = NULL;
+
+        sd_network_get_link_state(l->ifindex, &l->state);
+
+        return 0;
+}
+
+bool link_relevant(Link *l) {
+        assert(l);
+
+        /* A link is relevant if it isn't a loopback device and has at
+         * least one relevant IP address */
+
+        if (l->flags & IFF_LOOPBACK)
+                return false;
+/*
+        if (l->operational_state && !STR_IN_SET(l->operational_state, "unknown", "degraded", "routable"))
+                return false;
+
+        LIST_FOREACH(addresses, a, l->addresses)
+                if (link_address_relevant(a))
+                        return true;
+*/
+        return true;
+}