diff options
Diffstat (limited to 'src/network/wait-online/link.c')
| -rw-r--r-- | src/network/wait-online/link.c | 179 |
1 files changed, 179 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..e197e62 --- /dev/null +++ b/src/network/wait-online/link.c @@ -0,0 +1,179 @@ +/* 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; +} |