#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;
}
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);
if (l->manager)
hashmap_remove(l->manager->links, INT_TO_PTR(l->ifindex));
- while (l->dns_servers)
- dns_server_free(l->dns_servers);
-
dns_scope_free(l->unicast_scope);
dns_scope_free(l->llmnr_ipv4_scope);
dns_scope_free(l->llmnr_ipv6_scope);
static int link_update_dns_servers(Link *l) {
_cleanup_strv_free_ char **nameservers = NULL;
char **nameserver;
- DnsServer *s, *nx;
int r;
assert(l);
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;
}
return r;
}
-static int link_update_domains(Link *l) {
+static int link_update_search_domains(Link *l) {
+ _cleanup_strv_free_ char **domains = NULL;
+ char **i;
int r;
- if (!l->unicast_scope)
- return 0;
-
- strv_free(l->unicast_scope->domains);
- l->unicast_scope->domains = NULL;
+ assert(l);
- r = sd_network_link_get_domains(l->ifindex,
- &l->unicast_scope->domains);
+ r = sd_network_link_get_domains(l->ifindex, &domains);
if (r < 0)
- return r;
+ 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);
- link_update_domains(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;
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;
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;
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