#include <net/if.h>
#include "sd-network.h"
-#include "strv.h"
+
+#include "alloc-util.h"
#include "missing.h"
+#include "parse-util.h"
#include "resolved-link.h"
+#include "string-util.h"
+#include "strv.h"
int link_new(Manager *m, Link **ret, int ifindex) {
_cleanup_(link_freep) Link *l = NULL;
assert(m);
assert(ifindex > 0);
- r = hashmap_ensure_allocated(&m->links, NULL, NULL);
+ r = hashmap_ensure_allocated(&m->links, NULL);
if (r < 0)
return r;
}
Link *link_free(Link *l) {
-
if (!l)
return NULL;
+ link_flush_dns_servers(l);
+ dns_search_domain_unlink_all(l->search_domains);
+
while (l->addresses)
link_address_free(l->addresses);
dns_scope_free(l->llmnr_ipv4_scope);
dns_scope_free(l->llmnr_ipv6_scope);
- while (l->dns_servers)
- dns_server_free(l->dns_servers);
-
free(l);
return NULL;
}
if (!l->unicast_scope) {
r = dns_scope_new(l->manager, &l->unicast_scope, l, DNS_PROTOCOL_DNS, AF_UNSPEC);
if (r < 0)
- log_warning("Failed to allocate DNS scope: %s", strerror(-r));
+ log_warning_errno(r, "Failed to allocate DNS scope: %m");
}
} else
l->unicast_scope = dns_scope_free(l->unicast_scope);
- if (link_relevant(l, AF_INET) && l->llmnr_support != SUPPORT_NO && l->manager->llmnr_support != SUPPORT_NO) {
+ if (link_relevant(l, AF_INET) &&
+ l->llmnr_support != SUPPORT_NO &&
+ l->manager->llmnr_support != SUPPORT_NO) {
if (!l->llmnr_ipv4_scope) {
r = dns_scope_new(l->manager, &l->llmnr_ipv4_scope, l, DNS_PROTOCOL_LLMNR, AF_INET);
if (r < 0)
- log_warning("Failed to allocate LLMNR IPv4 scope: %s", strerror(-r));
+ log_warning_errno(r, "Failed to allocate LLMNR IPv4 scope: %m");
}
} else
l->llmnr_ipv4_scope = dns_scope_free(l->llmnr_ipv4_scope);
- if (link_relevant(l, AF_INET6) && l->llmnr_support != SUPPORT_NO && l->manager->llmnr_support != SUPPORT_NO) {
+ if (link_relevant(l, AF_INET6) &&
+ l->llmnr_support != SUPPORT_NO &&
+ l->manager->llmnr_support != SUPPORT_NO &&
+ socket_ipv6_is_supported()) {
if (!l->llmnr_ipv6_scope) {
r = dns_scope_new(l->manager, &l->llmnr_ipv6_scope, l, DNS_PROTOCOL_LLMNR, AF_INET6);
if (r < 0)
- log_warning("Failed to allocate LLMNR IPv6 scope: %s", strerror(-r));
+ log_warning_errno(r, "Failed to allocate LLMNR IPv6 scope: %m");
}
} else
l->llmnr_ipv6_scope = dns_scope_free(l->llmnr_ipv6_scope);
link_address_add_rrs(a, force_remove);
}
-int link_update_rtnl(Link *l, sd_rtnl_message *m) {
+int link_update_rtnl(Link *l, sd_netlink_message *m) {
const char *n = NULL;
int r;
if (r < 0)
return r;
- sd_rtnl_message_read_u32(m, IFLA_MTU, &l->mtu);
+ sd_netlink_message_read_u32(m, IFLA_MTU, &l->mtu);
- if (sd_rtnl_message_read_string(m, IFLA_IFNAME, &n) >= 0) {
+ if (sd_netlink_message_read_string(m, IFLA_IFNAME, &n) >= 0) {
strncpy(l->name, n, sizeof(l->name)-1);
char_array_0(l->name);
}
static int link_update_dns_servers(Link *l) {
_cleanup_strv_free_ char **nameservers = NULL;
char **nameserver;
- DnsServer *s, *nx;
int r;
assert(l);
- r = sd_network_get_link_dns(l->ifindex, &nameservers);
+ r = sd_network_link_get_dns(l->ifindex, &nameservers);
if (r < 0)
goto clear;
- LIST_FOREACH(servers, s, l->dns_servers)
- s->marked = true;
+ link_mark_dns_servers(l);
STRV_FOREACH(nameserver, nameservers) {
union in_addr_union a;
+ DnsServer *s;
int family;
r = in_addr_from_string_auto(*nameserver, &family, &a);
s = link_find_dns_server(l, family, &a);
if (s)
- s->marked = false;
+ dns_server_move_back_and_unmark(s);
else {
r = dns_server_new(l->manager, NULL, DNS_SERVER_LINK, l, family, &a);
if (r < 0)
}
}
- LIST_FOREACH_SAFE(servers, s, nx, l->dns_servers)
- if (s->marked)
- dns_server_free(s);
-
+ link_flush_marked_dns_servers(l);
return 0;
clear:
- while (l->dns_servers)
- dns_server_free(l->dns_servers);
-
+ link_flush_dns_servers(l);
return r;
}
assert(l);
- r = sd_network_get_link_llmnr(l->ifindex, &b);
+ r = sd_network_link_get_llmnr(l->ifindex, &b);
if (r < 0)
goto clear;
return r;
}
+static int link_update_search_domains(Link *l) {
+ _cleanup_strv_free_ char **domains = NULL;
+ char **i;
+ int r;
+
+ assert(l);
+
+ r = sd_network_link_get_domains(l->ifindex, &domains);
+ if (r < 0)
+ goto clear;
+
+ dns_search_domain_mark_all(l->search_domains);
+
+ STRV_FOREACH(i, domains) {
+ DnsSearchDomain *d;
+
+ r = dns_search_domain_find(l->search_domains, *i, &d);
+ if (r < 0)
+ goto clear;
+
+ if (r > 0)
+ dns_search_domain_move_back_and_unmark(d);
+ else {
+ r = dns_search_domain_new(l->manager, NULL, DNS_SEARCH_DOMAIN_LINK, l, *i);
+ if (r < 0)
+ goto clear;
+ }
+ }
+
+ dns_search_domain_unlink_marked(l->search_domains);
+ return 0;
+
+clear:
+ dns_search_domain_unlink_all(l->search_domains);
+ return r;
+}
+
int link_update_monitor(Link *l) {
+ int r;
+
assert(l);
link_update_dns_servers(l);
link_update_llmnr_support(l);
link_allocate_scopes(l);
+
+ r = link_update_search_domains(l);
+ if (r < 0)
+ log_warning_errno(r, "Failed to read search domains for interface %s, ignoring: %m", l->name);
+
link_add_rrs(l, false);
return 0;
if ((l->flags & (IFF_UP|IFF_LOWER_UP|IFF_MULTICAST)) != (IFF_UP|IFF_LOWER_UP|IFF_MULTICAST))
return false;
- sd_network_get_link_operational_state(l->ifindex, &state);
+ sd_network_link_get_operational_state(l->ifindex, &state);
if (state && !STR_IN_SET(state, "unknown", "degraded", "routable"))
return false;
return NULL;
}
+void link_flush_dns_servers(Link *l) {
+ assert(l);
+
+ while (l->dns_servers)
+ dns_server_unlink(l->dns_servers);
+}
+
+void link_flush_marked_dns_servers(Link *l) {
+ DnsServer *s, *next;
+
+ assert(l);
+
+ LIST_FOREACH_SAFE(servers, s, next, l->dns_servers) {
+ if (!s->marked)
+ continue;
+
+ dns_server_unlink(s);
+ }
+}
+
+void link_mark_dns_servers(Link *l) {
+ DnsServer *s;
+
+ assert(l);
+
+ LIST_FOREACH(servers, s, l->dns_servers)
+ s->marked = true;
+}
+
DnsServer* link_find_dns_server(Link *l, int family, const union in_addr_union *in_addr) {
DnsServer *s;
assert(l);
+ assert(in_addr);
LIST_FOREACH(servers, s, l->dns_servers)
if (s->family == family && in_addr_equal(family, &s->address, in_addr))
log_info("Switching to DNS server %s for interface %s.", strna(ip), l->name);
}
- l->current_dns_server = s;
+ dns_server_unref(l->current_dns_server);
+ l->current_dns_server = dns_server_ref(s);
if (l->unicast_scope)
dns_cache_flush(&l->unicast_scope->cache);
if (!l->current_dns_server)
return;
- if (l->current_dns_server->servers_next) {
+ /* Change to the next one, but make sure to follow the linked
+ * list only if this server is actually still linked. */
+ if (l->current_dns_server->linked && l->current_dns_server->servers_next) {
link_set_dns_server(l, l->current_dns_server->servers_next);
return;
}
a->link->llmnr_support == SUPPORT_YES &&
a->link->manager->llmnr_support == SUPPORT_YES) {
- if (!a->link->manager->host_ipv4_key) {
- a->link->manager->host_ipv4_key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_A, a->link->manager->hostname);
- if (!a->link->manager->host_ipv4_key) {
+ if (!a->link->manager->llmnr_host_ipv4_key) {
+ a->link->manager->llmnr_host_ipv4_key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_A, a->link->manager->llmnr_hostname);
+ if (!a->link->manager->llmnr_host_ipv4_key) {
r = -ENOMEM;
goto fail;
}
}
if (!a->llmnr_address_rr) {
- a->llmnr_address_rr = dns_resource_record_new(a->link->manager->host_ipv4_key);
+ a->llmnr_address_rr = dns_resource_record_new(a->link->manager->llmnr_host_ipv4_key);
if (!a->llmnr_address_rr) {
r = -ENOMEM;
goto fail;
}
if (!a->llmnr_ptr_rr) {
- r = dns_resource_record_new_reverse(&a->llmnr_ptr_rr, a->family, &a->in_addr, a->link->manager->hostname);
+ r = dns_resource_record_new_reverse(&a->llmnr_ptr_rr, a->family, &a->in_addr, a->link->manager->llmnr_hostname);
if (r < 0)
goto fail;
r = dns_zone_put(&a->link->llmnr_ipv4_scope->zone, a->link->llmnr_ipv4_scope, a->llmnr_address_rr, true);
if (r < 0)
- log_warning("Failed to add A record to LLMNR zone: %s", strerror(-r));
+ log_warning_errno(r, "Failed to add A record to LLMNR zone: %m");
r = dns_zone_put(&a->link->llmnr_ipv4_scope->zone, a->link->llmnr_ipv4_scope, a->llmnr_ptr_rr, false);
if (r < 0)
- log_warning("Failed to add IPv6 PTR record to LLMNR zone: %s", strerror(-r));
+ log_warning_errno(r, "Failed to add IPv6 PTR record to LLMNR zone: %m");
} else {
if (a->llmnr_address_rr) {
if (a->link->llmnr_ipv4_scope)
a->link->llmnr_support == SUPPORT_YES &&
a->link->manager->llmnr_support == SUPPORT_YES) {
- if (!a->link->manager->host_ipv6_key) {
- a->link->manager->host_ipv6_key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_AAAA, a->link->manager->hostname);
- if (!a->link->manager->host_ipv6_key) {
+ if (!a->link->manager->llmnr_host_ipv6_key) {
+ a->link->manager->llmnr_host_ipv6_key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_AAAA, a->link->manager->llmnr_hostname);
+ if (!a->link->manager->llmnr_host_ipv6_key) {
r = -ENOMEM;
goto fail;
}
}
if (!a->llmnr_address_rr) {
- a->llmnr_address_rr = dns_resource_record_new(a->link->manager->host_ipv6_key);
+ a->llmnr_address_rr = dns_resource_record_new(a->link->manager->llmnr_host_ipv6_key);
if (!a->llmnr_address_rr) {
r = -ENOMEM;
goto fail;
}
if (!a->llmnr_ptr_rr) {
- r = dns_resource_record_new_reverse(&a->llmnr_ptr_rr, a->family, &a->in_addr, a->link->manager->hostname);
+ r = dns_resource_record_new_reverse(&a->llmnr_ptr_rr, a->family, &a->in_addr, a->link->manager->llmnr_hostname);
if (r < 0)
goto fail;
r = dns_zone_put(&a->link->llmnr_ipv6_scope->zone, a->link->llmnr_ipv6_scope, a->llmnr_address_rr, true);
if (r < 0)
- log_warning("Failed to add AAAA record to LLMNR zone: %s", strerror(-r));
+ log_warning_errno(r, "Failed to add AAAA record to LLMNR zone: %m");
r = dns_zone_put(&a->link->llmnr_ipv6_scope->zone, a->link->llmnr_ipv6_scope, a->llmnr_ptr_rr, false);
if (r < 0)
- log_warning("Failed to add IPv6 PTR record to LLMNR zone: %s", strerror(-r));
+ log_warning_errno(r, "Failed to add IPv6 PTR record to LLMNR zone: %m");
} else {
if (a->llmnr_address_rr) {
if (a->link->llmnr_ipv6_scope)
return;
fail:
- log_debug("Failed to update address RRs: %s", strerror(-r));
+ log_debug_errno(r, "Failed to update address RRs: %m");
}
-int link_address_update_rtnl(LinkAddress *a, sd_rtnl_message *m) {
+int link_address_update_rtnl(LinkAddress *a, sd_netlink_message *m) {
int r;
assert(a);
assert(m);