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-rw-r--r--src/resolve/resolved-conf.c157
-rw-r--r--src/resolve/resolved-conf.h32
-rw-r--r--src/resolve/resolved-dns-scope.c2
-rw-r--r--src/resolve/resolved-dns-server.c29
-rw-r--r--src/resolve/resolved-dns-server.h9
-rw-r--r--src/resolve/resolved-gperf.gperf6
-rw-r--r--src/resolve/resolved-link.c50
-rw-r--r--src/resolve/resolved-manager.c190
-rw-r--r--src/resolve/resolved.c19
-rw-r--r--src/resolve/resolved.conf.in4
-rw-r--r--src/resolve/resolved.h24
11 files changed, 371 insertions, 151 deletions
diff --git a/src/resolve/resolved-conf.c b/src/resolve/resolved-conf.c
new file mode 100644
index 0000000000..0def80e3a5
--- /dev/null
+++ b/src/resolve/resolved-conf.c
@@ -0,0 +1,157 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+ ***/
+
+#include "conf-parser.h"
+
+#include "resolved-conf.h"
+
+int manager_parse_dns_server(Manager *m, DnsServerType type, const char *string) {
+ const char *word, *state;
+ size_t length;
+ DnsServer *first;
+ int r;
+
+ assert(m);
+ assert(string);
+
+ first = type == DNS_SERVER_FALLBACK ? m->fallback_dns_servers : m->dns_servers;
+
+ FOREACH_WORD_QUOTED(word, length, string, state) {
+ char buffer[length+1];
+ int family;
+ union in_addr_union addr;
+ bool found = false;
+ DnsServer *s;
+
+ memcpy(buffer, word, length);
+ buffer[length] = 0;
+
+ r = in_addr_from_string_auto(buffer, &family, &addr);
+ if (r < 0) {
+ log_warning("Ignoring invalid DNS address '%s'", buffer);
+ continue;
+ }
+
+ /* Filter out duplicates */
+ LIST_FOREACH(servers, s, first)
+ if (s->family == family && in_addr_equal(family, &s->address, &addr)) {
+ found = true;
+ break;
+ }
+
+ if (found)
+ continue;
+
+ r = dns_server_new(m, NULL, type, NULL, family, &addr);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+int config_parse_dnsv(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Manager *m = userdata;
+ DnsServer **l;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(m);
+
+ if (ltype == DNS_SERVER_FALLBACK)
+ l = &m->fallback_dns_servers;
+ else
+ l = &m->dns_servers;
+
+ /* Empty assignment means clear the list */
+ if (isempty(rvalue)) {
+ while (*l)
+ dns_server_free(*l);
+
+ return 0;
+ }
+
+ r = manager_parse_dns_server(m, ltype, rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse DNS server string '%s'. Ignoring.", rvalue);
+ return 0;
+ }
+
+ return 0;
+}
+
+int config_parse_support(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Manager *m = userdata;
+ Support support, *v = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(m);
+
+ support = support_from_string(rvalue);
+ if (support < 0) {
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse support level '%s'. Ignoring.", rvalue);
+ return 0;
+ }
+
+ support = r ? SUPPORT_YES : SUPPORT_NO;
+ }
+
+ *v = support;
+ return 0;
+}
+
+int manager_parse_config_file(Manager *m) {
+ assert(m);
+
+ return config_parse(NULL, "/etc/systemd/resolved.conf", NULL,
+ "Resolve\0",
+ config_item_perf_lookup, resolved_gperf_lookup,
+ false, false, true, m);
+}
diff --git a/src/resolve/resolved-conf.h b/src/resolve/resolved-conf.h
new file mode 100644
index 0000000000..cdd68fea07
--- /dev/null
+++ b/src/resolve/resolved-conf.h
@@ -0,0 +1,32 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "resolved.h"
+
+int manager_parse_dns_server(Manager *m, DnsServerType type, const char *string);
+int manager_parse_config_file(Manager *m);
+
+const struct ConfigPerfItem* resolved_gperf_lookup(const char *key, unsigned length);
+
+int config_parse_dnsv(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_support(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c
index 6061761723..42a2fc4c77 100644
--- a/src/resolve/resolved-dns-scope.c
+++ b/src/resolve/resolved-dns-scope.c
@@ -384,7 +384,7 @@ int dns_scope_good_dns_server(DnsScope *s, int family, const union in_addr_union
if (s->link)
return !!link_find_dns_server(s->link, family, address);
else
- return !!manager_find_dns_server(s->manager, family, address);
+ return manager_known_dns_server(s->manager, family, address);
}
static int dns_scope_make_reply_packet(
diff --git a/src/resolve/resolved-dns-server.c b/src/resolve/resolved-dns-server.c
index 2be81ff1d8..2c413370ea 100644
--- a/src/resolve/resolved-dns-server.c
+++ b/src/resolve/resolved-dns-server.c
@@ -24,6 +24,7 @@
int dns_server_new(
Manager *m,
DnsServer **ret,
+ DnsServerType type,
Link *l,
int family,
const union in_addr_union *in_addr) {
@@ -31,26 +32,40 @@ int dns_server_new(
DnsServer *s, *tail;
assert(m);
+ assert((type == DNS_SERVER_LINK) == !!l);
assert(in_addr);
s = new0(DnsServer, 1);
if (!s)
return -ENOMEM;
+ s->type = type;
s->family = family;
s->address = *in_addr;
- if (l) {
+ if (type == DNS_SERVER_LINK) {
LIST_FIND_TAIL(servers, l->dns_servers, tail);
LIST_INSERT_AFTER(servers, l->dns_servers, tail, s);
s->link = l;
- } else {
+ } else if (type == DNS_SERVER_SYSTEM) {
LIST_FIND_TAIL(servers, m->dns_servers, tail);
LIST_INSERT_AFTER(servers, m->dns_servers, tail, s);
- }
+ } else if (type == DNS_SERVER_FALLBACK) {
+ LIST_FIND_TAIL(servers, m->fallback_dns_servers, tail);
+ LIST_INSERT_AFTER(servers, m->fallback_dns_servers, tail, s);
+ } else
+ assert_not_reached("Unknown server type");
s->manager = m;
+ /* A new DNS server that isn't fallback is added and the one
+ * we used so far was a fallback one? Then let's try to pick
+ * the new one */
+ if (type != DNS_SERVER_FALLBACK &&
+ s->manager->current_dns_server &&
+ s->manager->current_dns_server->type == DNS_SERVER_FALLBACK)
+ s->manager->current_dns_server = NULL;
+
if (ret)
*ret = s;
@@ -62,10 +77,14 @@ DnsServer* dns_server_free(DnsServer *s) {
return NULL;
if (s->manager) {
- if (s->link)
+ if (s->type == DNS_SERVER_LINK)
LIST_REMOVE(servers, s->link->dns_servers, s);
- else
+ else if (s->type == DNS_SERVER_SYSTEM)
LIST_REMOVE(servers, s->manager->dns_servers, s);
+ else if (s->type == DNS_SERVER_FALLBACK)
+ LIST_REMOVE(servers, s->manager->fallback_dns_servers, s);
+ else
+ assert_not_reached("Unknown server type");
}
if (s->link && s->link->current_dns_server == s)
diff --git a/src/resolve/resolved-dns-server.h b/src/resolve/resolved-dns-server.h
index 574616ef0f..358bbd43d6 100644
--- a/src/resolve/resolved-dns-server.h
+++ b/src/resolve/resolved-dns-server.h
@@ -30,9 +30,17 @@ typedef enum DnsServerSource DnsServerSource;
#include "resolved-link.h"
#include "resolved-dns-server.h"
+typedef enum DnsServerType {
+ DNS_SERVER_SYSTEM,
+ DNS_SERVER_FALLBACK,
+ DNS_SERVER_LINK,
+} DnsServerType;
+
struct DnsServer {
Manager *manager;
+ DnsServerType type;
+
Link *link;
int family;
@@ -46,6 +54,7 @@ struct DnsServer {
int dns_server_new(
Manager *m,
DnsServer **s,
+ DnsServerType type,
Link *l,
int family,
const union in_addr_union *address);
diff --git a/src/resolve/resolved-gperf.gperf b/src/resolve/resolved-gperf.gperf
index 051ccec708..8e78fbf06a 100644
--- a/src/resolve/resolved-gperf.gperf
+++ b/src/resolve/resolved-gperf.gperf
@@ -1,7 +1,7 @@
%{
#include <stddef.h>
#include "conf-parser.h"
-#include "resolved.h"
+#include "resolved-conf.h"
%}
struct ConfigPerfItem;
%null_strings
@@ -14,4 +14,6 @@ struct ConfigPerfItem;
%struct-type
%includes
%%
-Resolve.DNS, config_parse_dnsv, 0, 0
+Resolve.DNS, config_parse_dnsv, DNS_SERVER_SYSTEM, 0
+Resolve.FallbackDNS, config_parse_dnsv, DNS_SERVER_FALLBACK, 0
+Resolve.LLMNR, config_parse_support, 0, offsetof(Manager, llmnr_support)
diff --git a/src/resolve/resolved-link.c b/src/resolve/resolved-link.c
index 5355eab042..93ccc04491 100644
--- a/src/resolve/resolved-link.c
+++ b/src/resolve/resolved-link.c
@@ -92,7 +92,7 @@ static void link_allocate_scopes(Link *l) {
} else
l->unicast_scope = dns_scope_free(l->unicast_scope);
- if (link_relevant(l, AF_INET) && l->manager->use_llmnr) {
+ if (link_relevant(l, AF_INET) && 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)
@@ -101,7 +101,7 @@ static void link_allocate_scopes(Link *l) {
} else
l->llmnr_ipv4_scope = dns_scope_free(l->llmnr_ipv4_scope);
- if (link_relevant(l, AF_INET6) && l->manager->use_llmnr) {
+ if (link_relevant(l, AF_INET6) && l->manager->llmnr_support != SUPPORT_NO) {
if (!l->llmnr_ipv6_scope) {
r = dns_scope_new(l->manager, &l->llmnr_ipv6_scope, l, DNS_PROTOCOL_LLMNR, AF_INET6);
if (r < 0)
@@ -169,7 +169,7 @@ static int link_update_dns_servers(Link *l) {
if (s)
s->marked = false;
else {
- r = dns_server_new(l->manager, NULL, l, family, &a);
+ r = dns_server_new(l->manager, NULL, DNS_SERVER_LINK, l, family, &a);
if (r < 0)
goto clear;
}
@@ -248,11 +248,29 @@ DnsServer* link_find_dns_server(Link *l, int family, const union in_addr_union *
return NULL;
}
+static DnsServer* link_set_dns_server(Link *l, DnsServer *s) {
+ assert(l);
+
+ if (l->current_dns_server == s)
+ return s;
+
+ if (s) {
+ _cleanup_free_ char *ip = NULL;
+
+ in_addr_to_string(s->family, &s->address, &ip);
+ log_info("Switching to DNS server %s for interface %s.", strna(ip), l->name);
+ } else
+ log_info("No DNS server set for interface %s.", l->name);
+
+ l->current_dns_server = s;
+ return s;
+}
+
DnsServer *link_get_dns_server(Link *l) {
assert(l);
if (!l->current_dns_server)
- l->current_dns_server = l->dns_servers;
+ link_set_dns_server(l, l->dns_servers);
return l->current_dns_server;
}
@@ -260,23 +278,15 @@ DnsServer *link_get_dns_server(Link *l) {
void link_next_dns_server(Link *l) {
assert(l);
- /* Switch to the next DNS server */
-
- if (!l->current_dns_server) {
- l->current_dns_server = l->dns_servers;
- if (l->current_dns_server)
- return;
- }
-
if (!l->current_dns_server)
return;
if (l->current_dns_server->servers_next) {
- l->current_dns_server = l->current_dns_server->servers_next;
+ link_set_dns_server(l, l->current_dns_server->servers_next);
return;
}
- l->current_dns_server = l->dns_servers;
+ link_set_dns_server(l, l->dns_servers);
}
int link_address_new(Link *l, LinkAddress **ret, int family, const union in_addr_union *in_addr) {
@@ -337,7 +347,11 @@ void link_address_add_rrs(LinkAddress *a, bool force_remove) {
if (a->family == AF_INET) {
- if (!force_remove && link_address_relevant(a) && a->link->llmnr_ipv4_scope) {
+ if (!force_remove &&
+ link_address_relevant(a) &&
+ a->link->llmnr_ipv4_scope &&
+ 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) {
@@ -389,7 +403,11 @@ void link_address_add_rrs(LinkAddress *a, bool force_remove) {
if (a->family == AF_INET6) {
- if (!force_remove && link_address_relevant(a) && a->link->llmnr_ipv6_scope) {
+ if (!force_remove &&
+ link_address_relevant(a) &&
+ a->link->llmnr_ipv6_scope &&
+ 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) {
diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c
index 6987c29e07..ffb356eae1 100644
--- a/src/resolve/resolved-manager.c
+++ b/src/resolve/resolved-manager.c
@@ -33,8 +33,10 @@
#include "conf-parser.h"
#include "socket-util.h"
#include "af-list.h"
-#include "resolved.h"
#include "utf8.h"
+
+#include "resolved.h"
+#include "resolved-conf.h"
#include "resolved-dns-domain.h"
#define SEND_TIMEOUT_USEC (200 * USEC_PER_MSEC)
@@ -305,87 +307,6 @@ static int manager_network_monitor_listen(Manager *m) {
return 0;
}
-static int parse_dns_server_string(Manager *m, const char *string) {
- const char *word, *state;
- size_t length;
- int r;
-
- assert(m);
- assert(string);
-
- FOREACH_WORD_QUOTED(word, length, string, state) {
- char buffer[length+1];
- int family;
- union in_addr_union addr;
-
- memcpy(buffer, word, length);
- buffer[length] = 0;
-
- r = in_addr_from_string_auto(buffer, &family, &addr);
- if (r < 0) {
- log_warning("Ignoring invalid DNS address '%s'", buffer);
- continue;
- }
-
- /* filter out duplicates */
- if (manager_find_dns_server(m, family, &addr))
- continue;
-
- r = dns_server_new(m, NULL, NULL, family, &addr);
- if (r < 0)
- return r;
- }
- /* do not warn about state here, since probably systemd already did */
-
- return 0;
-}
-
-int config_parse_dnsv(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- Manager *m = userdata;
- int r;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(m);
-
- /* Empty assignment means clear the list */
- if (isempty(rvalue)) {
- while (m->dns_servers)
- dns_server_free(m->dns_servers);
-
- return 0;
- }
-
- r = parse_dns_server_string(m, rvalue);
- if (r < 0) {
- log_error("Failed to parse DNS server string");
- return r;
- }
-
- return 0;
-}
-
-int manager_parse_config_file(Manager *m) {
- assert(m);
-
- return config_parse(NULL, "/etc/systemd/resolved.conf", NULL,
- "Resolve\0",
- config_item_perf_lookup, resolved_gperf_lookup,
- false, false, true, m);
-}
-
static int determine_hostname(char **ret) {
_cleanup_free_ char *h = NULL, *n = NULL;
int r;
@@ -487,9 +408,9 @@ int manager_new(Manager **ret) {
m->llmnr_ipv4_tcp_fd = m->llmnr_ipv6_tcp_fd = -1;
m->hostname_fd = -1;
- m->use_llmnr = true;
+ m->llmnr_support = SUPPORT_YES;
- r = parse_dns_server_string(m, DNS_SERVERS);
+ r = manager_parse_dns_server(m, DNS_SERVER_FALLBACK, DNS_SERVERS);
if (r < 0)
return r;
@@ -560,6 +481,8 @@ Manager *manager_free(Manager *m) {
while (m->dns_servers)
dns_server_free(m->dns_servers);
+ while (m->fallback_dns_servers)
+ dns_server_free(m->fallback_dns_servers);
sd_event_source_unref(m->network_event_source);
sd_network_monitor_unref(m->network_monitor);
@@ -605,8 +528,8 @@ static void write_resolve_conf_server(DnsServer *s, FILE *f, unsigned *count) {
assert(count);
r = in_addr_to_string(s->family, &s->address, &t);
- if (r < 0) {
- log_warning("Invalid DNS address. Ignoring.");
+ if (r < 0) {
+ log_warning("Invalid DNS address. Ignoring: %s", strerror(-r));
return;
}
@@ -618,7 +541,7 @@ static void write_resolve_conf_server(DnsServer *s, FILE *f, unsigned *count) {
}
int manager_write_resolv_conf(Manager *m) {
- const char *path = "/run/systemd/resolve/resolv.conf";
+ static const char path[] = "/run/systemd/resolve/resolv.conf";
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
unsigned count = 0;
@@ -641,12 +564,17 @@ int manager_write_resolv_conf(Manager *m) {
"# resolv.conf(5) in a different way, replace the symlink by a\n"
"# static file or a different symlink.\n\n", f);
+ LIST_FOREACH(servers, s, m->dns_servers)
+ write_resolve_conf_server(s, f, &count);
+
HASHMAP_FOREACH(l, m->links, i)
LIST_FOREACH(servers, s, l->dns_servers)
write_resolve_conf_server(s, f, &count);
- LIST_FOREACH(servers, s, m->dns_servers)
- write_resolve_conf_server(s, f, &count);
+ if (count == 0) {
+ LIST_FOREACH(servers, s, m->fallback_dns_servers)
+ write_resolve_conf_server(s, f, &count);
+ }
r = fflush_and_check(f);
if (r < 0)
@@ -1017,27 +945,65 @@ int manager_send(Manager *m, int fd, int ifindex, int family, const union in_add
return -EAFNOSUPPORT;
}
-DnsServer* manager_find_dns_server(Manager *m, int family, const union in_addr_union *in_addr) {
+bool manager_known_dns_server(Manager *m, int family, const union in_addr_union *in_addr) {
DnsServer *s;
assert(m);
assert(in_addr);
- LIST_FOREACH(servers, s, m->dns_servers) {
+ LIST_FOREACH(servers, s, m->dns_servers)
+ if (s->family == family && in_addr_equal(family, &s->address, in_addr))
+ return true;
- if (s->family == family &&
- in_addr_equal(family, &s->address, in_addr))
- return s;
- }
+ LIST_FOREACH(servers, s, m->fallback_dns_servers)
+ if (s->family == family && in_addr_equal(family, &s->address, in_addr))
+ return true;
- return NULL;
+ return false;
+}
+
+static DnsServer *manager_set_dns_server(Manager *m, DnsServer *s) {
+ assert(m);
+
+ if (m->current_dns_server == s)
+ return s;
+
+ if (s) {
+ _cleanup_free_ char *ip = NULL;
+
+ in_addr_to_string(s->family, &s->address, &ip);
+ log_info("Switching to system DNS server %s.", strna(ip));
+ } else
+ log_info("No system DNS server set.");
+
+ m->current_dns_server = s;
+ return s;
}
DnsServer *manager_get_dns_server(Manager *m) {
+ Link *l;
assert(m);
if (!m->current_dns_server)
- m->current_dns_server = m->dns_servers;
+ manager_set_dns_server(m, m->dns_servers);
+
+ if (!m->current_dns_server) {
+ bool found = false;
+ Iterator i;
+
+ /* No DNS servers configured, let's see if there are
+ * any on any links. If not, we use the fallback
+ * servers */
+
+ HASHMAP_FOREACH(l, m->links, i)
+ if (l->dns_servers) {
+ found = true;
+ break;
+ }
+
+ if (!found)
+ manager_set_dns_server(m, m->fallback_dns_servers);
+ }
return m->current_dns_server;
}
@@ -1045,20 +1011,23 @@ DnsServer *manager_get_dns_server(Manager *m) {
void manager_next_dns_server(Manager *m) {
assert(m);
- if (!m->current_dns_server) {
- m->current_dns_server = m->dns_servers;
- return;
- }
-
+ /* If there's currently no DNS server set, then the next
+ * manager_get_dns_server() will find one */
if (!m->current_dns_server)
return;
+ /* Change to the next one */
if (m->current_dns_server->servers_next) {
- m->current_dns_server = m->current_dns_server->servers_next;
+ manager_set_dns_server(m, m->current_dns_server->servers_next);
return;
}
- m->current_dns_server = m->dns_servers;
+ /* If there was no next one, then start from the beginning of
+ * the list */
+ if (m->current_dns_server->type == DNS_SERVER_FALLBACK)
+ manager_set_dns_server(m, m->fallback_dns_servers);
+ else
+ manager_set_dns_server(m, m->dns_servers);
}
uint32_t manager_find_mtu(Manager *m) {
@@ -1494,7 +1463,7 @@ int manager_find_ifindex(Manager *m, int family, const union in_addr_union *in_a
assert(m);
- a = manager_find_address(m, family, in_addr);
+ a = manager_find_link_address(m, family, in_addr);
if (a)
return a->link->ifindex;
@@ -1551,7 +1520,7 @@ int manager_next_hostname(Manager *m) {
return 0;
}
-LinkAddress* manager_find_address(Manager *m, int family, const union in_addr_union *in_addr) {
+LinkAddress* manager_find_link_address(Manager *m, int family, const union in_addr_union *in_addr) {
Iterator i;
Link *l;
@@ -1572,5 +1541,12 @@ int manager_our_packet(Manager *m, DnsPacket *p) {
assert(m);
assert(p);
- return !!manager_find_address(m, p->family, &p->sender);
+ return !!manager_find_link_address(m, p->family, &p->sender);
}
+
+static const char* const support_table[_SUPPORT_MAX] = {
+ [SUPPORT_NO] = "no",
+ [SUPPORT_YES] = "yes",
+ [SUPPORT_RESOLVE] = "resolve",
+};
+DEFINE_STRING_TABLE_LOOKUP(support, Support);
diff --git a/src/resolve/resolved.c b/src/resolve/resolved.c
index 275f99c924..b4d743fe0d 100644
--- a/src/resolve/resolved.c
+++ b/src/resolve/resolved.c
@@ -21,12 +21,12 @@
#include "sd-event.h"
#include "sd-daemon.h"
-
-#include "resolved.h"
-
#include "mkdir.h"
#include "capability.h"
+#include "resolved.h"
+#include "resolved-conf.h"
+
int main(int argc, char *argv[]) {
_cleanup_(manager_freep) Manager *m = NULL;
const char *user = "systemd-resolve";
@@ -55,8 +55,7 @@ int main(int argc, char *argv[]) {
/* Always create the directory where resolv.conf will live */
r = mkdir_safe_label("/run/systemd/resolve", 0755, uid, gid);
if (r < 0) {
- log_error("Could not create runtime directory: %s",
- strerror(-r));
+ log_error("Could not create runtime directory: %s", strerror(-r));
goto finish;
}
@@ -74,15 +73,13 @@ int main(int argc, char *argv[]) {
r = manager_parse_config_file(m);
if (r < 0)
- return r;
+ log_warning("Failed to parse configuration file: %s", strerror(-r));
- /* write finish default resolv.conf to avoid a dangling
+ /* Write finish default resolv.conf to avoid a dangling
* symlink */
r = manager_write_resolv_conf(m);
- if (r < 0) {
- log_error("Could not create resolv.conf: %s", strerror(-r));
- goto finish;
- }
+ if (r < 0)
+ log_warning("Could not create resolv.conf: %s", strerror(-r));
sd_notify(false,
"READY=1\n"
diff --git a/src/resolve/resolved.conf.in b/src/resolve/resolved.conf.in
index a2391954aa..c8263d67f4 100644
--- a/src/resolve/resolved.conf.in
+++ b/src/resolve/resolved.conf.in
@@ -8,4 +8,6 @@
# See resolved.conf(5) for details
[Resolve]
-#DNS=@DNS_SERVERS@
+#DNS=
+#FallbackDNS=@DNS_SERVERS@
+#LLMNR=yes
diff --git a/src/resolve/resolved.h b/src/resolve/resolved.h
index 34eb7b5c5a..caac61b797 100644
--- a/src/resolve/resolved.h
+++ b/src/resolve/resolved.h
@@ -5,7 +5,7 @@
/***
This file is part of systemd.
- Copyright 2013 Tom Gundersen <teg@jklm.no>
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
@@ -36,10 +36,18 @@ typedef struct Manager Manager;
#include "resolved-dns-scope.h"
#include "resolved-dns-stream.h"
+typedef enum Support {
+ SUPPORT_NO,
+ SUPPORT_YES,
+ SUPPORT_RESOLVE,
+ _SUPPORT_MAX,
+ _SUPPORT_INVALID = -1
+} Support;
+
struct Manager {
sd_event *event;
- bool use_llmnr:1;
+ Support llmnr_support;
/* Network */
Hashmap *links;
@@ -66,6 +74,7 @@ struct Manager {
sd_event_source *dns_ipv6_event_source;
LIST_HEAD(DnsServer, dns_servers);
+ LIST_HEAD(DnsServer, fallback_dns_servers);
DnsServer *current_dns_server;
LIST_HEAD(DnsScope, dns_scopes);
@@ -101,10 +110,9 @@ struct Manager {
int manager_new(Manager **ret);
Manager* manager_free(Manager *m);
-int manager_parse_config_file(Manager *m);
int manager_write_resolv_conf(Manager *m);
-DnsServer* manager_find_dns_server(Manager *m, int family, const union in_addr_union *in_addr);
+bool manager_known_dns_server(Manager *m, int family, const union in_addr_union *in_addr);
DnsServer *manager_get_dns_server(Manager *m);
void manager_next_dns_server(Manager *m);
@@ -122,7 +130,7 @@ int manager_llmnr_ipv6_tcp_fd(Manager *m);
int manager_ifindex_is_loopback(Manager *m, int ifindex);
int manager_find_ifindex(Manager *m, int family, const union in_addr_union *in_addr);
-LinkAddress* manager_find_address(Manager *m, int family, const union in_addr_union *in_addr);
+LinkAddress* manager_find_link_address(Manager *m, int family, const union in_addr_union *in_addr);
void manager_refresh_rrs(Manager *m);
int manager_next_hostname(Manager *m);
@@ -132,7 +140,7 @@ int manager_connect_bus(Manager *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
-const struct ConfigPerfItem* resolved_gperf_lookup(const char *key, unsigned length);
-int config_parse_dnsv(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-
#define EXTRA_CMSG_SPACE 1024
+
+const char* support_to_string(Support p) _const_;
+int support_from_string(const char *s) _pure_;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-23 18:01:43 +0000