Also remove the equivalent functionality from networkd.
/systemd-remount-api-vfs
/systemd-remount-fs
/systemd-reply-password
+/systemd-resolved
/systemd-rfkill
/systemd-run
/systemd-shutdown
endif
+if ENABLE_RESOLVED
+MANPAGES += \
+ man/resolved.conf.5 \
+ man/systemd-resolved.service.8
+MANPAGES_ALIAS += \
+ man/systemd-resolved.8
+man/systemd-resolved.8: man/systemd-resolved.service.8
+man/systemd-resolved.html: man/systemd-resolved.service.html
+ $(html-alias)
+
+endif
+
if ENABLE_RFKILL
MANPAGES += \
man/systemd-rfkill@.service.8
man/nss-myhostname.xml \
man/os-release.xml \
man/pam_systemd.xml \
+ man/resolved.conf.xml \
man/runlevel.xml \
man/sd-daemon.xml \
man/sd-id128.xml \
man/systemd-random-seed.service.xml \
man/systemd-readahead-replay.service.xml \
man/systemd-remount-fs.service.xml \
+ man/systemd-resolved.service.xml \
man/systemd-rfkill@.service.xml \
man/systemd-run.xml \
man/systemd-shutdownd.service.xml \
endif
+# ------------------------------------------------------------------------------
+if ENABLE_RESOLVED
+systemd_resolved_SOURCES = \
+ src/resolve/resolved.h \
+ src/resolve/resolved.c \
+ src/resolve/resolved-manager.c
+
+nodist_systemd_resolved_SOURCES = \
+ src/resolve/resolved-gperf.c
+
+EXTRA_DIST += \
+ src/resolve/resolved-gperf.gperf
+
+CLEANFILES += \
+ src/resolve/resolved-gperf.c
+
+systemd_resolved_LDADD = \
+ libsystemd-label.la \
+ libsystemd-internal.la \
+ libsystemd-shared.la \
+ libsystemd-network.la
+
+rootlibexec_PROGRAMS += \
+ systemd-resolved
+
+nodist_systemunit_DATA += \
+ units/systemd-resolved.service
+
+EXTRA_DIST += \
+ units/systemd-resolved.service.in
+
+GENERAL_ALIASES += \
+ $(systemunitdir)/systemd-resolved.service $(pkgsysconfdir)/system/multi-user.target.wants/systemd-resolved.service
+
+nodist_pkgsysconf_DATA += \
+ src/resolve/resolved.conf
+
+EXTRA_DIST += \
+ src/resolve/resolved.conf.in
+
+CLEANFILES += \
+ src/resolve/resolved.conf
+
+endif
+
# ------------------------------------------------------------------------------
if ENABLE_NETWORKD
rootlibexec_PROGRAMS += \
nodist_libsystemd_networkd_core_la_SOURCES = \
src/network/networkd-network-gperf.c \
- src/network/networkd-netdev-gperf.c \
- src/network/networkd-gperf.c
+ src/network/networkd-netdev-gperf.c
libsystemd_networkd_core_la_LIBADD = \
libudev-internal.la \
$(systemunitdir)/systemd-networkd.service $(pkgsysconfdir)/system/multi-user.target.wants/systemd-networkd.service \
$(systemunitdir)/systemd-networkd.service $(pkgsysconfdir)/system/network-online.target.wants/systemd-networkd-wait-online.service
-nodist_pkgsysconf_DATA += \
- src/network/networkd.conf
-
EXTRA_DIST += \
src/network/networkd-network-gperf.gperf \
src/network/networkd-netdev-gperf.gperf \
- src/network/networkd-gperf.gperf \
units/systemd-networkd.service.in \
- units/systemd-networkd-wait-online.service.in \
- src/network/networkd.conf.in
+ units/systemd-networkd-wait-online.service.in
CLEANFILES += \
src/network/networkd-network-gperf.c \
- src/network/networkd-netdev-gperf.c \
- src/network/networkd-gperf.c \
- src/network/networkd.conf
+ src/network/networkd-netdev-gperf.c
endif
# ------------------------------------------------------------------------------
AM_CONDITIONAL(ENABLE_POLKIT, [test "x$have_polkit" = "xyes"])
# ------------------------------------------------------------------------------
-have_networkd=no
-AC_ARG_ENABLE(networkd, AS_HELP_STRING([--disable-networkd], [disable networkd]))
-if test "x$enable_networkd" != "xno"; then
- AC_DEFINE(ENABLE_NETWORKD, 1, [Define if networkd support is to be enabled])
- have_networkd=yes
+have_resolved=no
+AC_ARG_ENABLE(resolved, AS_HELP_STRING([--disable-resolved], [disable resolve daemon]))
+if test "x$enable_resolved" != "xno"; then
+ have_resolved=yes
fi
-AS_IF([test "x$have_networkd" = "xyes" -a "x$have_kmod" != "xyes"],
- [AC_MSG_ERROR([networkd requires kmod])])
-AM_CONDITIONAL(ENABLE_NETWORKD, [test "x$have_networkd" = "xyes"])
+AM_CONDITIONAL(ENABLE_RESOLVED, [test "$have_resolved" = "yes"])
AC_ARG_WITH(dns-servers,
AS_HELP_STRING([--with-dns-servers=DNSSERVERS],
[Space-separated list of default DNS servers]),
- [DNS_SERVERS="$withval"],
+ [NTP_SERVERS="$withval"],
[DNS_SERVERS="8.8.8.8 8.8.4.4 2001:4860:4860::8888 2001:4860:4860::8844"])
AC_DEFINE_UNQUOTED(DNS_SERVERS, ["$DNS_SERVERS"], [Default DNS Servers])
AC_SUBST(DNS_SERVERS)
+# ------------------------------------------------------------------------------
+have_networkd=no
+AC_ARG_ENABLE(networkd, AS_HELP_STRING([--disable-networkd], [disable networkd]))
+if test "x$enable_networkd" != "xno"; then
+ AC_DEFINE(ENABLE_NETWORKD, 1, [Define if networkd support is to be enabled])
+ have_networkd=yes
+fi
+AS_IF([test "x$have_networkd" = "xyes" -a "x$have_kmod" != "xyes"],
+ [AC_MSG_ERROR([networkd requires kmod])])
+AM_CONDITIONAL(ENABLE_NETWORKD, [test "x$have_networkd" = "xyes"])
+
# ------------------------------------------------------------------------------
have_efi=no
AC_ARG_ENABLE(efi, AS_HELP_STRING([--disable-efi], [disable EFI support]))
time epoch: ${TIME_EPOCH}
localed: ${have_localed}
networkd: ${have_networkd}
+ resolved: ${have_resolved}
default DNS servers: ${DNS_SERVERS}
coredump: ${have_coredump}
polkit: ${have_polkit}
--- /dev/null
+<?xml version='1.0'?> <!--*-nxml-*-->
+<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+ This file is part of systemd.
+
+ Copyright 2014 Tom Gundersen
+
+ 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/>.
+-->
+
+<refentry id="resolved.conf" conditional='ENABLE_RESOLVED'>
+ <refentryinfo>
+ <title>resolved.conf</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Tom</firstname>
+ <surname>Gundersen</surname>
+ <email>teg@jklm.no</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>resolved.conf</refentrytitle>
+ <manvolnum>5</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>resolved.conf</refname>
+ <refpurpose>Network Name Resolution configuration file</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>/etc/systemd/resolved.conf</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>When starting, systemd-resolved will read the
+ configuration file <filename>resolved.conf</filename>.
+ This configuration file determines the fallback DNS
+ servers.</para>
+
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <variablelist class='network-directives'>
+
+ <varlistentry>
+ <term><varname>DNS=</varname></term>
+ <listitem><para>A space separated list of IPv4 and IPv6
+ addresses to be used as the fallback DNS servers. Note that
+ the servers obtained from
+ <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ take precedence. If this option is not given, a compiled-in
+ list of DNS servers is used instead.</para></listitem>
+ </varlistentry>
+
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>
restarting networkd does not cut the network connection, and, in particular,
that it is safe to transition between the initrd and the real root,
and back.</para>
-
- <para>Nameservers configured in networkd, or received over DHCP
- are exposed in <filename>/run/systemd/network/resolv.conf</filename>.
- This file should not be used directly, but only through a symlink
- from <filename>/etc/resolv.conf</filename>.</para>
</refsect1>
<refsect1><title>Configuration Files</title>
--- /dev/null
+<?xml version='1.0'?> <!--*-nxml-*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+ This file is part of systemd.
+
+ Copyright 2014 Tom Gundersen
+
+ 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/>.
+-->
+
+<refentry id="systemd-resolved.service" conditional='ENABLE_RESOLVED'>
+
+ <refentryinfo>
+ <title>systemd-resolved.service</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Tom</firstname>
+ <surname>Gundersen</surname>
+ <email>teg@jklm.no</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd-resolved.service</refentrytitle>
+ <manvolnum>8</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd-resolved.service</refname>
+ <refname>systemd-resolved</refname>
+ <refpurpose>Network Name Resolution manager</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>systemd-resolved.service</filename></para>
+ <para><filename>/usr/lib/systemd/systemd-resolved</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><command>systemd-networkd</command> is a system
+ service that manages network name resolution. It does so by
+ generating <filename>/run/systemd/network/resolv.conf</filename>,
+ which may be symlinked from <filename>/etc/resolv.conf</filename>.
+ The contents is generated from the global settings in
+ <citerefentry><refentrytitle>resolved.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ the per-link static settings in <filename>.network</filename> files,
+ and the per-link dynamic settings received over DHCP. See
+ <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for more details.</para>
+
+ <para>Note that <filename>/run/systemd/network/resolv.conf</filename>
+ should not be used directly, but only through a symlink from
+ <filename>/etc/resolv.conf</filename>.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>resolved.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>
/networkd-network-gperf.c
/networkd-netdev-gperf.c
-/networkd-gperf.c
-/networkd.conf
struct in_addr netmask;
struct in_addr gateway;
unsigned prefixlen;
- struct in_addr *nameservers;
- size_t nameservers_size;
int r;
assert(client);
link->dhcp_lease = lease;
- if (link->network->dhcp_dns) {
- r = sd_dhcp_lease_get_dns(lease, &nameservers, &nameservers_size);
- if (r >= 0) {
- r = manager_update_resolv_conf(link->manager);
- if (r < 0)
- log_error_link(link, "Failed to update resolv.conf");
- }
- }
-
if (link->network->dhcp_mtu) {
uint16_t mtu;
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <resolv.h>
+#include <sys/socket.h>
#include <linux/if.h>
#include <libkmod.h>
return 0;
}
-static int set_fallback_dns(Manager *m, const char *string) {
- char *word, *state;
- size_t length;
- int r;
-
- assert(m);
- assert(string);
-
- FOREACH_WORD_QUOTED(word, length, string, state) {
- _cleanup_address_free_ Address *address = NULL;
- Address *tail;
- _cleanup_free_ char *addrstr = NULL;
-
- r = address_new_dynamic(&address);
- if (r < 0)
- return r;
-
- addrstr = strndup(word, length);
- if (!addrstr)
- return -ENOMEM;
-
- r = net_parse_inaddr(addrstr, &address->family, &address->in_addr);
- if (r < 0) {
- log_debug("Ignoring invalid DNS address '%s'", addrstr);
- continue;
- }
-
- LIST_FIND_TAIL(addresses, m->fallback_dns, tail);
- LIST_INSERT_AFTER(addresses, m->fallback_dns, tail, address);
- address = NULL;
- }
-
- 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;
- Address *address;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(m);
-
- while ((address = m->fallback_dns)) {
- LIST_REMOVE(addresses, m->fallback_dns, address);
- address_free(address);
- }
-
- set_fallback_dns(m, rvalue);
-
- return 0;
-}
-
-static int manager_parse_config_file(Manager *m) {
- static const char fn[] = "/etc/systemd/networkd.conf";
- _cleanup_fclose_ FILE *f = NULL;
- int r;
-
- assert(m);
-
- f = fopen(fn, "re");
- if (!f) {
- if (errno == ENOENT)
- return 0;
-
- log_warning("Failed to open configuration file %s: %m", fn);
- return -errno;
- }
-
- r = config_parse(NULL, fn, f, "Network\0", config_item_perf_lookup,
- (void*) networkd_gperf_lookup, false, false, m);
- if (r < 0)
- log_warning("Failed to parse configuration file: %s", strerror(-r));
-
- return r;
-}
-
int manager_new(Manager **ret) {
_cleanup_manager_free_ Manager *m = NULL;
int r;
if (!m->state_file)
return -ENOMEM;
- r = set_fallback_dns(m, DNS_SERVERS);
- if (r < 0)
- return r;
-
- r = manager_parse_config_file(m);
- if (r < 0)
- return r;
-
r = sd_event_default(&m->event);
if (r < 0)
return r;
Network *network;
NetDev *netdev;
Link *link;
- Address *address;
if (!m)
return;
sd_event_source_unref(m->sigint_event_source);
sd_event_unref(m->event);
- while ((address = m->fallback_dns)) {
- LIST_REMOVE(addresses, m->fallback_dns, address);
- address_free(address);
- }
-
while ((link = hashmap_first(m->links)))
link_unref(link);
hashmap_free(m->links);
return 0;
}
-static void append_dns(FILE *f, struct in_addr *dns, unsigned char family, unsigned *count) {
- char buf[INET6_ADDRSTRLEN];
- const char *address;
-
- address = inet_ntop(family, dns, buf, INET6_ADDRSTRLEN);
- if (!address) {
- log_warning("Invalid DNS address. Ignoring.");
- return;
- }
-
- if (*count == MAXNS)
- fputs("# Too many DNS servers configured, the following entries "
- "will be ignored\n", f);
-
- fprintf(f, "nameserver %s\n", address);
-
- (*count) ++;
-}
-
-int manager_update_resolv_conf(Manager *m) {
- _cleanup_free_ char *temp_path = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- Link *link;
- Iterator i;
- unsigned count = 0;
- const char *domainname = NULL;
- int r;
-
- assert(m);
-
- r = fopen_temporary("/run/systemd/network/resolv.conf", &f, &temp_path);
- if (r < 0)
- return r;
-
- fchmod(fileno(f), 0644);
-
- fputs("# This file is managed by systemd-networkd(8). Do not edit.\n#\n"
- "# Third party programs must not access this file directly, but\n"
- "# only through the symlink at /etc/resolv.conf. To manage\n"
- "# resolv.conf(5) in a different way, replace the symlink by a\n"
- "# static file or a different symlink.\n\n", f);
-
- HASHMAP_FOREACH(link, m->links, i) {
- if (link->dhcp_lease) {
- struct in_addr *nameservers;
- size_t nameservers_size;
-
- if (link->network->dhcp_dns) {
- r = sd_dhcp_lease_get_dns(link->dhcp_lease, &nameservers, &nameservers_size);
- if (r >= 0) {
- unsigned j;
-
- for (j = 0; j < nameservers_size; j++)
- append_dns(f, &nameservers[j], AF_INET, &count);
- }
- }
-
- if (link->network->dhcp_domainname && !domainname) {
- r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname);
- if (r >= 0)
- fprintf(f, "domain %s\n", domainname);
- }
- }
- }
-
- HASHMAP_FOREACH(link, m->links, i) {
- if (link->network && link->network->dns) {
- Address *address;
-
- LIST_FOREACH(addresses, address, link->network->dns) {
- append_dns(f, &address->in_addr.in,
- address->family, &count);
- }
- }
- }
-
- if (!count) {
- Address *address;
-
- LIST_FOREACH(addresses, address, m->fallback_dns)
- append_dns(f, &address->in_addr.in,
- address->family, &count);
- }
-
- fflush(f);
-
- if (ferror(f) || rename(temp_path, "/run/systemd/network/resolv.conf") < 0) {
- r = -errno;
- unlink("/run/systemd/network/resolv.conf");
- unlink(temp_path);
- return r;
- }
-
- return 0;
-}
-
int manager_save(Manager *m) {
Link *link;
Iterator i;
link->network = network;
if (network->dns) {
- r = manager_update_resolv_conf(manager);
+ r = link_save(link);
if (r < 0)
return r;
}
goto out;
}
- /* write out empty resolv.conf to avoid a
- * dangling symlink */
- r = manager_update_resolv_conf(m);
- if (r < 0) {
- log_error("Could not create resolv.conf: %s", strerror(-r));
- goto out;
- }
-
sd_notify(false,
"READY=1\n"
"STATUS=Processing requests...");
Hashmap *links;
Hashmap *netdevs;
LIST_HEAD(Network, networks);
- LIST_HEAD(Address, fallback_dns);
usec_t network_dirs_ts_usec;
struct kmod_ctx *kmod_ctx;
int manager_udev_listen(Manager *m);
int manager_bus_listen(Manager *m);
-int manager_update_resolv_conf(Manager *m);
int manager_save(Manager *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
#define _cleanup_manager_free_ _cleanup_(manager_freep)
-const struct ConfigPerfItem* networkd_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);
-
/* NetDev */
int netdev_load(Manager *manager);
--- /dev/null
+/resolved-gperf.c
+/resolved.conf
--- /dev/null
+../Makefile
\ No newline at end of file
%{
#include <stddef.h>
#include "conf-parser.h"
-#include "networkd.h"
+#include "resolved.h"
%}
struct ConfigPerfItem;
%null_strings
%language=ANSI-C
%define slot-name section_and_lvalue
-%define hash-function-name networkd_gperf_hash
-%define lookup-function-name networkd_gperf_lookup
+%define hash-function-name resolved_gperf_hash
+%define lookup-function-name resolved_gperf_lookup
%readonly-tables
%omit-struct-type
%struct-type
%includes
%%
-Network.DNS, config_parse_dnsv, 0, offsetof(Manager, fallback_dns)
+Resolve.DNS, config_parse_dnsv, 0, offsetof(Manager, fallback_dns)
--- /dev/null
+/*-*- 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 <arpa/inet.h>
+#include <resolv.h>
+#include <linux/if.h>
+
+#include "resolved.h"
+#include "event-util.h"
+#include "network-util.h"
+#include "sd-dhcp-lease.h"
+#include "dhcp-lease-internal.h"
+#include "network-internal.h"
+#include "conf-parser.h"
+#include "mkdir.h"
+
+static int set_fallback_dns(Manager *m, const char *string) {
+ char *word, *state;
+ size_t length;
+ int r;
+
+ assert(m);
+ assert(string);
+
+ FOREACH_WORD_QUOTED(word, length, string, state) {
+ _cleanup_free_ Address *address = NULL;
+ Address *tail;
+ _cleanup_free_ char *addrstr = NULL;
+
+ address = new0(Address, 1);
+ if (!address)
+ return -ENOMEM;
+
+ addrstr = strndup(word, length);
+ if (!addrstr)
+ return -ENOMEM;
+
+ r = net_parse_inaddr(addrstr, &address->family, &address->in_addr);
+ if (r < 0) {
+ log_debug("Ignoring invalid DNS address '%s'", addrstr);
+ continue;
+ }
+
+ LIST_FIND_TAIL(addresses, m->fallback_dns, tail);
+ LIST_INSERT_AFTER(addresses, m->fallback_dns, tail, address);
+ address = NULL;
+ }
+
+ 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;
+ Address *address;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(m);
+
+ while ((address = m->fallback_dns)) {
+ LIST_REMOVE(addresses, m->fallback_dns, address);
+ free(address);
+ }
+
+ set_fallback_dns(m, rvalue);
+
+ return 0;
+}
+
+static int manager_parse_config_file(Manager *m) {
+ static const char fn[] = "/etc/systemd/resolved.conf";
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ assert(m);
+
+ f = fopen(fn, "re");
+ if (!f) {
+ if (errno == ENOENT)
+ return 0;
+
+ log_warning("Failed to open configuration file %s: %m", fn);
+ return -errno;
+ }
+
+ r = config_parse(NULL, fn, f, "Resolve\0", config_item_perf_lookup,
+ (void*) resolved_gperf_lookup, false, false, m);
+ if (r < 0)
+ log_warning("Failed to parse configuration file: %s", strerror(-r));
+
+ return r;
+}
+
+int manager_new(Manager **ret) {
+ _cleanup_manager_free_ Manager *m = NULL;
+ int r;
+
+ m = new0(Manager, 1);
+ if (!m)
+ return -ENOMEM;
+
+ r = set_fallback_dns(m, DNS_SERVERS);
+ if (r < 0)
+ return r;
+
+ r = manager_parse_config_file(m);
+ if (r < 0)
+ return r;
+
+ r = sd_event_default(&m->event);
+ if (r < 0)
+ return r;
+
+ sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
+ sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
+
+ sd_event_set_watchdog(m->event, true);
+
+ *ret = m;
+ m = NULL;
+
+ return 0;
+}
+
+void manager_free(Manager *m) {
+ Address *address;
+
+ if (!m)
+ return;
+
+ sd_event_unref(m->event);
+
+ while ((address = m->fallback_dns)) {
+ LIST_REMOVE(addresses, m->fallback_dns, address);
+ free(address);
+ }
+
+ free(m);
+}
+
+static void append_dns(FILE *f, void *dns, unsigned char family, unsigned *count) {
+ char buf[INET6_ADDRSTRLEN];
+ const char *address;
+
+ assert(f);
+ assert(dns);
+ assert(count);
+
+ address = inet_ntop(family, dns, buf, INET6_ADDRSTRLEN);
+ if (!address) {
+ log_warning("Invalid DNS address. Ignoring.");
+ return;
+ }
+
+ if (*count == MAXNS)
+ fputs("# Too many DNS servers configured, the following entries "
+ "may be ignored\n", f);
+
+ fprintf(f, "nameserver %s\n", address);
+
+ (*count) ++;
+}
+
+int manager_update_resolv_conf(Manager *m) {
+ _cleanup_free_ char *temp_path = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ unsigned *indices = NULL;
+ Address *address;
+ unsigned count = 0;
+ int n, r, i;
+
+ assert(m);
+
+ r = fopen_temporary("/run/systemd/network/resolv.conf", &f, &temp_path);
+ if (r < 0)
+ return r;
+
+ fchmod(fileno(f), 0644);
+
+ fputs("# This file is managed by systemd-resolved(8). Do not edit.\n#\n"
+ "# Third party programs must not access this file directly, but\n"
+ "# only through the symlink at /etc/resolv.conf. To manage\n"
+ "# resolv.conf(5) in a different way, replace the symlink by a\n"
+ "# static file or a different symlink.\n\n", f);
+
+ n = sd_network_get_ifindices(&indices);
+ if (n < 0)
+ n = 0;
+
+ for (i = 0; i < n; i++) {
+ _cleanup_dhcp_lease_unref_ sd_dhcp_lease *lease = NULL;
+ struct in_addr *nameservers;
+ struct in6_addr *nameservers6;
+ size_t nameservers_size;
+
+ r = sd_network_dhcp_use_dns(indices[i]);
+ if (r > 0) {
+ r = sd_network_get_dhcp_lease(indices[i], &lease);
+ if (r >= 0) {
+ r = sd_dhcp_lease_get_dns(lease, &nameservers, &nameservers_size);
+ if (r >= 0) {
+ unsigned j;
+
+ for (j = 0; j < nameservers_size; j++)
+ append_dns(f, &nameservers[j], AF_INET, &count);
+ }
+ }
+ }
+
+ r = sd_network_get_dns(indices[i], &nameservers, &nameservers_size);
+ if (r >= 0) {
+ unsigned j;
+
+ for (j = 0; j < nameservers_size; j++)
+ append_dns(f, &nameservers[j], AF_INET, &count);
+
+ free(nameservers);
+ }
+
+ r = sd_network_get_dns6(indices[i], &nameservers6, &nameservers_size);
+ if (r >= 0) {
+ unsigned j;
+
+ for (j = 0; j < nameservers_size; j++)
+ append_dns(f, &nameservers6[j], AF_INET6, &count);
+
+ free(nameservers6);
+ }
+ }
+
+ LIST_FOREACH(addresses, address, m->fallback_dns)
+ append_dns(f, &address->in_addr, address->family, &count);
+
+ fflush(f);
+
+ if (ferror(f) || rename(temp_path, "/run/systemd/network/resolv.conf") < 0) {
+ r = -errno;
+ unlink("/run/systemd/network/resolv.conf");
+ unlink(temp_path);
+ return r;
+ }
+
+ return 0;
+}
+
+static int manager_network_event_handler(sd_event_source *s, int fd, uint32_t revents,
+ void *userdata) {
+ Manager *m = userdata;
+ int r;
+
+ assert(m);
+
+ r = manager_update_resolv_conf(m);
+ if (r < 0)
+ log_warning("Could not update resolv.conf: %s", strerror(-r));
+
+ sd_network_monitor_flush(m->network_monitor);
+
+ return 0;
+}
+
+int manager_network_monitor_listen(Manager *m) {
+ _cleanup_event_source_unref_ sd_event_source *event_source = NULL;
+ _cleanup_network_monitor_unref_ sd_network_monitor *monitor = NULL;
+ int r, fd, events;
+
+ r = sd_network_monitor_new(NULL, &monitor);
+ if (r < 0)
+ return r;
+
+ fd = sd_network_monitor_get_fd(monitor);
+ if (fd < 0)
+ return fd;
+
+ events = sd_network_monitor_get_events(monitor);
+ if (events < 0)
+ return events;
+
+ r = sd_event_add_io(m->event, &event_source, fd, events,
+ &manager_network_event_handler, m);
+ if (r < 0)
+ return r;
+
+ m->network_monitor = monitor;
+ m->network_event_source = event_source;
+ monitor = NULL;
+ event_source = NULL;
+
+ return 0;
+}
--- /dev/null
+/*-*- 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 "sd-event.h"
+#include "sd-daemon.h"
+
+#include "resolved.h"
+
+#include "mkdir.h"
+
+int main(int argc, char *argv[]) {
+ _cleanup_manager_free_ Manager *m = NULL;
+ int r;
+
+ log_set_target(LOG_TARGET_AUTO);
+ log_parse_environment();
+ log_open();
+
+ umask(0022);
+
+ if (argc != 1) {
+ log_error("This program takes no arguments.");
+ r = -EINVAL;
+ goto out;
+ }
+
+ /* Always create the directory where resolv.conf will live */
+ r = mkdir_label("/run/systemd/network", 0755);
+ if (r < 0)
+ log_error("Could not create runtime directory: %s",
+ strerror(-r));
+
+ r = manager_new(&m);
+ if (r < 0) {
+ log_error("Could not create manager: %s", strerror(-r));
+ goto out;
+ }
+
+ r = manager_network_monitor_listen(m);
+ if (r < 0) {
+ log_error("Could not listen for network events: %s", strerror(-r));
+ goto out;
+ }
+
+ /* write out default resolv.conf to avoid a
+ * dangling symlink */
+ r = manager_update_resolv_conf(m);
+ if (r < 0) {
+ log_error("Could not create resolv.conf: %s", strerror(-r));
+ goto out;
+ }
+
+ sd_notify(false,
+ "READY=1\n"
+ "STATUS=Processing requests...");
+
+ r = sd_event_loop(m->event);
+ if (r < 0) {
+ log_error("Event loop failed: %s", strerror(-r));
+ goto out;
+ }
+
+out:
+ sd_notify(false,
+ "STATUS=Shutting down...");
+
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
-# See networkd.conf(5) for details
+# See resolved.conf(5) for details
-[Network]
+[Resolve]
#DNS=@DNS_SERVERS@
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 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/>.
+***/
+
+#pragma once
+
+#include "sd-event.h"
+#include "sd-network.h"
+
+#include "util.h"
+#include "list.h"
+
+typedef struct Address Address;
+typedef struct Manager Manager;
+
+struct Address {
+ unsigned char family;
+
+ union {
+ struct in_addr in;
+ struct in6_addr in6;
+ } in_addr;
+
+ LIST_FIELDS(Address, addresses);
+};
+
+struct Manager {
+ sd_event *event;
+
+ LIST_HEAD(Address, fallback_dns);
+
+ /* network */
+ sd_event_source *network_event_source;
+ sd_network_monitor *network_monitor;
+};
+
+/* Manager */
+
+int manager_new(Manager **ret);
+void manager_free(Manager *m);
+
+int manager_update_resolv_conf(Manager *m);
+int manager_network_monitor_listen(Manager *m);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
+#define _cleanup_manager_free_ _cleanup_(manager_freep)
+
+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);
/systemd-readahead-replay.service
/systemd-reboot.service
/systemd-remount-fs.service
+/systemd-resolved.service
/systemd-rfkill@.service
/systemd-shutdownd.service
/systemd-suspend.service
--- /dev/null
+# This file is part of systemd.
+#
+# 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.
+
+[Unit]
+Description=Network Name Resolution
+Documentation=man:systemd-resolved.service(8)
+After=systemd-networkd.service network.service
+
+[Service]
+Type=notify
+Restart=always
+RestartSec=0
+ExecStart=@rootlibexecdir@/systemd-resolved
+CapabilityBoundingSet=
+
+[Install]
+WantedBy=multi-user.target
~ianmdlvl / elogind.git / commitdiff