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/* 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);
assert(ifname);
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_ensure_put(&m->links_by_index, NULL, INT_TO_PTR(ifindex), l);
if (r < 0)
return r;
r = hashmap_ensure_put(&m->links_by_name, &string_hash_ops, l->ifname, 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_by_index, 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 *required_operstate = NULL, *required_family = NULL,
*ipv4_address_state = NULL, *ipv6_address_state = 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 && r != -ENODATA)
ret = log_link_debug_errno(l, r, "Failed to determine whether the link is required for online or not, "
"assuming required: %m");
l->required_for_online = r != 0;
r = sd_network_link_get_required_operstate_for_online(l->ifindex, &required_operstate);
if (r < 0 && r != -ENODATA)
ret = log_link_debug_errno(l, r, "Failed to get required operational state, ignoring: %m");
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 = network_link_get_operational_state(l->ifindex, &l->operational_state);
if (r < 0)
ret = log_link_debug_errno(l, r, "Failed to get operational state, ignoring: %m");
r = sd_network_link_get_required_family_for_online(l->ifindex, &required_family);
if (r < 0 && r != -ENODATA)
ret = log_link_debug_errno(l, r, "Failed to get required address family, ignoring: %m");
if (isempty(required_family))
l->required_family = ADDRESS_FAMILY_NO;
else {
AddressFamily f;
f = link_required_address_family_from_string(required_family);
if (f < 0)
ret = log_link_debug_errno(l, f, "Failed to parse required address family, ignoring: %m");
else
l->required_family = f;
}
r = sd_network_link_get_ipv4_address_state(l->ifindex, &ipv4_address_state);
if (r < 0)
ret = log_link_debug_errno(l, r, "Failed to get IPv4 address state, ignoring: %m");
else {
LinkAddressState s;
s = link_address_state_from_string(ipv4_address_state);
if (s < 0)
ret = log_link_debug_errno(l, s, "Failed to parse IPv4 address state, ignoring: %m");
else
l->ipv4_address_state = s;
}
r = sd_network_link_get_ipv6_address_state(l->ifindex, &ipv6_address_state);
if (r < 0)
ret = log_link_debug_errno(l, r, "Failed to get IPv6 address state, ignoring: %m");
else {
LinkAddressState s;
s = link_address_state_from_string(ipv6_address_state);
if (s < 0)
ret = log_link_debug_errno(l, s, "Failed to parse IPv6 address state, ignoring: %m");
else
l->ipv6_address_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;
}
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