154 lines
4.5 KiB
C
154 lines
4.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include "sd-network.h"
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#include "alloc-util.h"
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#include "hashmap.h"
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#include "link.h"
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#include "manager.h"
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#include "string-util.h"
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int link_new(Manager *m, Link **ret, int ifindex, const char *ifname) {
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_cleanup_(link_freep) Link *l = NULL;
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_cleanup_free_ char *n = NULL;
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int r;
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assert(m);
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assert(ifindex > 0);
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r = hashmap_ensure_allocated(&m->links, NULL);
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if (r < 0)
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return r;
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r = hashmap_ensure_allocated(&m->links_by_name, &string_hash_ops);
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if (r < 0)
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return r;
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n = strdup(ifname);
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if (!n)
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return -ENOMEM;
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l = new(Link, 1);
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if (!l)
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return -ENOMEM;
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*l = (Link) {
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.manager = m,
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.ifname = TAKE_PTR(n),
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.ifindex = ifindex,
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.required_operstate = LINK_OPERSTATE_RANGE_DEFAULT,
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};
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r = hashmap_put(m->links_by_name, l->ifname, l);
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if (r < 0)
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return r;
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r = hashmap_put(m->links, INT_TO_PTR(ifindex), l);
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if (r < 0)
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return r;
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if (ret)
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*ret = l;
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TAKE_PTR(l);
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return 0;
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}
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Link *link_free(Link *l) {
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if (!l)
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return NULL;
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if (l->manager) {
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hashmap_remove(l->manager->links, INT_TO_PTR(l->ifindex));
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hashmap_remove(l->manager->links_by_name, l->ifname);
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}
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free(l->state);
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free(l->ifname);
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return mfree(l);
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}
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int link_update_rtnl(Link *l, sd_netlink_message *m) {
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const char *ifname;
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int r;
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assert(l);
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assert(l->manager);
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assert(m);
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r = sd_rtnl_message_link_get_flags(m, &l->flags);
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if (r < 0)
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return r;
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r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname);
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if (r < 0)
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return r;
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if (!streq(l->ifname, ifname)) {
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char *new_ifname;
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new_ifname = strdup(ifname);
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if (!new_ifname)
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return -ENOMEM;
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assert_se(hashmap_remove(l->manager->links_by_name, l->ifname) == l);
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free_and_replace(l->ifname, new_ifname);
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r = hashmap_put(l->manager->links_by_name, l->ifname, l);
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if (r < 0)
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return r;
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}
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return 0;
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}
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int link_update_monitor(Link *l) {
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_cleanup_free_ char *operstate = NULL, *required_operstate = NULL, *state = NULL;
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int r, ret = 0;
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assert(l);
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assert(l->ifname);
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r = sd_network_link_get_required_for_online(l->ifindex);
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if (r < 0)
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ret = log_link_debug_errno(l, r, "Failed to determine whether the link is required for online or not, "
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"ignoring: %m");
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else
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l->required_for_online = r > 0;
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r = sd_network_link_get_required_operstate_for_online(l->ifindex, &required_operstate);
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if (r < 0)
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ret = log_link_debug_errno(l, r, "Failed to get required operational state, ignoring: %m");
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else if (isempty(required_operstate))
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l->required_operstate = LINK_OPERSTATE_RANGE_DEFAULT;
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else {
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r = parse_operational_state_range(required_operstate, &l->required_operstate);
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if (r < 0)
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ret = log_link_debug_errno(l, SYNTHETIC_ERRNO(EINVAL),
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"Failed to parse required operational state, ignoring: %m");
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}
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r = sd_network_link_get_operational_state(l->ifindex, &operstate);
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if (r < 0)
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ret = log_link_debug_errno(l, r, "Failed to get operational state, ignoring: %m");
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else {
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LinkOperationalState s;
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s = link_operstate_from_string(operstate);
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if (s < 0)
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ret = log_link_debug_errno(l, SYNTHETIC_ERRNO(EINVAL),
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"Failed to parse operational state, ignoring: %m");
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else
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l->operational_state = s;
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}
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r = sd_network_link_get_setup_state(l->ifindex, &state);
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if (r < 0)
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ret = log_link_debug_errno(l, r, "Failed to get setup state, ignoring: %m");
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else
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free_and_replace(l->state, state);
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return ret;
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}
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