1 files changed, 153 insertions, 0 deletions
diff --git a/src/network/wait-online/link.c b/src/network/wait-online/link.c
new file mode 100644
index 0000000..529fc9f
--- /dev/null
+++ b/src/network/wait-online/link.c
@@ -0,0 +1,153 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "sd-network.h"
+
+#include "alloc-util.h"
+#include "hashmap.h"
+#include "link.h"
+#include "manager.h"
+#include "string-util.h"
+
+int link_new(Manager *m, Link **ret, int ifindex, const char *ifname) {
+        _cleanup_(link_freep) Link *l = NULL;
+        _cleanup_free_ char *n = NULL;
+        int r;
+
+        assert(m);
+        assert(ifindex > 0);
+
+        r = hashmap_ensure_allocated(&m->links, NULL);
+        if (r < 0)
+                return r;
+
+        r = hashmap_ensure_allocated(&m->links_by_name, &string_hash_ops);
+        if (r < 0)
+                return r;
+
+        n = strdup(ifname);
+        if (!n)
+                return -ENOMEM;
+
+        l = new(Link, 1);
+        if (!l)
+                return -ENOMEM;
+
+        *l = (Link) {
+                .manager = m,
+                .ifname = TAKE_PTR(n),
+                .ifindex = ifindex,
+                .required_operstate = LINK_OPERSTATE_RANGE_DEFAULT,
+        };
+
+        r = hashmap_put(m->links_by_name, l->ifname, l);
+        if (r < 0)
+                return r;
+
+        r = hashmap_put(m->links, INT_TO_PTR(ifindex), l);
+        if (r < 0)
+                return r;
+
+        if (ret)
+                *ret = l;
+
+        TAKE_PTR(l);
+        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->state);
+        free(l->ifname);
+        return mfree(l);
+ }
+
+int link_update_rtnl(Link *l, sd_netlink_message *m) {
+        const 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_netlink_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;
+
+                assert_se(hashmap_remove(l->manager->links_by_name, l->ifname) == l);
+                free_and_replace(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) {
+        _cleanup_free_ char *operstate = NULL, *required_operstate = NULL, *state = NULL;
+        int r, ret = 0;
+
+        assert(l);
+        assert(l->ifname);
+
+        r = sd_network_link_get_required_for_online(l->ifindex);
+        if (r < 0)
+                ret = log_link_debug_errno(l, r, "Failed to determine whether the link is required for online or not, "
+                                           "ignoring: %m");
+        else
+                l->required_for_online = r > 0;
+
+        r = sd_network_link_get_required_operstate_for_online(l->ifindex, &required_operstate);
+        if (r < 0)
+                ret = log_link_debug_errno(l, r, "Failed to get required operational state, ignoring: %m");
+        else if (isempty(required_operstate))
+                l->required_operstate = LINK_OPERSTATE_RANGE_DEFAULT;
+        else {
+                r = parse_operational_state_range(required_operstate, &l->required_operstate);
+                if (r < 0)
+                        ret = log_link_debug_errno(l, SYNTHETIC_ERRNO(EINVAL),
+                                                   "Failed to parse required operational state, ignoring: %m");
+        }
+
+        r = sd_network_link_get_operational_state(l->ifindex, &operstate);
+        if (r < 0)
+                ret = log_link_debug_errno(l, r, "Failed to get operational state, ignoring: %m");
+        else {
+                LinkOperationalState s;
+
+                s = link_operstate_from_string(operstate);
+                if (s < 0)
+                        ret = log_link_debug_errno(l, SYNTHETIC_ERRNO(EINVAL),
+                                                   "Failed to parse operational state, ignoring: %m");
+                else
+                        l->operational_state = s;
+        }
+
+        r = sd_network_link_get_setup_state(l->ifindex, &state);
+        if (r < 0)
+                ret = log_link_debug_errno(l, r, "Failed to get setup state, ignoring: %m");
+        else
+                free_and_replace(l->state, state);
+
+        return ret;
+}