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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
Copyright 2014 Lennart Poettering
Copyright 2014 Tom Gundersen
***/
#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;
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;
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);
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;
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);
l->required_for_online = sd_network_link_get_required_for_online(l->ifindex) != 0;
l->operational_state = mfree(l->operational_state);
sd_network_link_get_operational_state(l->ifindex, &l->operational_state);
l->state = mfree(l->state);
sd_network_link_get_setup_state(l->ifindex, &l->state);
return 0;
}
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