docs: Add syntax for templated units to systemd.preset man page

This documents the syntax

     enable template@.service foo bar baz

that was introduced in #9901 to preset templated units.

hwdb.d/60-evdev.hwdb

@@ -528,6 +528,13 @@ evdev:name:SynPS/2 Synaptics TouchPad:dmi:*:svnLENOVO:*pvrThinkPadT490:*
  EVDEV_ABS_35=::57
  EVDEV_ABS_36=::33
 
+# Lenovo Legion Y9000X2020
+evdev:name:MSFT0001:02 04F3:304B Touchpad:dmi:*svnLENOVO:*pvrLenovoLegionY9000X2020*
+ EVDEV_ABS_00=::31
+ EVDEV_ABS_01=::30
+ EVDEV_ABS_35=::31
+ EVDEV_ABS_36=::30
+
 #########################################
 # Razer
 #########################################

hwdb.d/60-keyboard.hwdb

@@ -808,6 +808,15 @@ evdev:atkbd:dmi:bvn*:bvr*:svnLENOVO*:pn*IdeaPad*Z370*:pvr*
  KEYBOARD_KEY_ae=!volumedown
  KEYBOARD_KEY_b0=!volumeup
 
+# Fix for volume keys on Lenovo Yoga S940
+# For 10th gen it should be pn81Q8 instead of pn81Q7 but 
+# I don't have a device to test
+# perhaps pn81Q* would work for both generations
+evdev:atkbd:dmi:bvn*:bvr*:svnLENOVO:pn81Q7*:pvrLenovoYogaS940*
+ KEYBOARD_KEY_a0=!mute
+ KEYBOARD_KEY_ae=!volumedown
+ KEYBOARD_KEY_b0=!volumeup
+
 # Lenovo Y50-70
 evdev:atkbd:dmi:bvn*:bvr*:svnLENOVO*:pn*20378*:pvr*
  KEYBOARD_KEY_f3=f21      # Fn+F6 (toggle touchpad)

man/systemd.network.xml

@@ -1474,7 +1474,13 @@
               "link" scope will be used. For anything else, scope defaults to "global".</para>
           </listitem>
         </varlistentry>
-
+        <varlistentry>
+          <term><varname>UseGateway=</varname></term>
+          <listitem>
+            <para>When true (the default), the gateway will be requested from the DHCP server and added to the
+            routing table with a metric of 1024, and a scope of "link".</para>
+          </listitem>
+        </varlistentry>
         <varlistentry>
           <term><varname>UseTimezone=</varname></term>
 

man/systemd.preset.xml

@@ -71,7 +71,10 @@
     <literal>disable</literal> followed by a space and a unit name
     (possibly with shell style wildcards), separated by newlines.
     Empty lines and lines whose first non-whitespace character is <literal>#</literal> or
-    <literal>;</literal> are ignored.</para>
+    <literal>;</literal> are ignored. Multiple instance names for unit
+    templates may be specified as a space separated list at the end of
+    the line instead of the customary position between <literal>@</literal>
+    and the unit suffix.</para>
 
     <para>Presets must refer to the "real" unit file, and not to any aliases. See
     <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
@@ -123,6 +126,17 @@ disable *</programlisting>
     <literal>99-</literal>, it will be read last and hence can easily
     be overridden by spin or administrator preset policy.</para>
 
+    <example>
+      <title>Enable multiple template instances</title>
+
+      <programlisting># /usr/lib/systemd/system-preset/80-dirsrv.preset
+
+enable dirsrv@.service foo bar baz</programlisting>
+    </example>
+
+    <para>This enables all three of <filename>dirsrv@foo.service</filename>,
+    <filename>dirsrv@bar.service</filename> and <filename>dirsrv@baz.service</filename>.</para>
+
     <example>
       <title>A GNOME spin</title>
 

po/pl.po

@@ -6,8 +6,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: systemd\n"
 "Report-Msgid-Bugs-To: https://github.com/systemd/systemd/issues\n"
-"POT-Creation-Date: 2020-02-29 15:12+0000\n"
-"PO-Revision-Date: 2020-03-01 14:45+0100\n"
+"POT-Creation-Date: 2020-03-07 03:28+0000\n"
+"PO-Revision-Date: 2020-03-15 13:13+0100\n"
 "Last-Translator: Piotr Drąg <piotrdrag@gmail.com>\n"
 "Language-Team: Polish <trans-pl@lists.fedoraproject.org>\n"
 "Language: pl\n"
@@ -776,26 +776,35 @@ msgid "Authentication is required to reset DNS settings."
 msgstr "Wymagane jest uwierzytelnienie, aby przywrócić ustawienia DNS."
 
 #: src/network/org.freedesktop.network1.policy:143
+msgid "DHCP server sends force renew message"
+msgstr "Serwer DHCP wysyła komunikat wymuszonego odnowienia"
+
+#: src/network/org.freedesktop.network1.policy:144
+msgid "Authentication is required to send force renew message."
+msgstr ""
+"Wymagane jest uwierzytelnienie, aby wysłać komunikat wymuszonego odnowienia."
+
+#: src/network/org.freedesktop.network1.policy:154
 msgid "Renew dynamic addresses"
 msgstr "Odnowienie adresów dynamicznych"
 
-#: src/network/org.freedesktop.network1.policy:144
+#: src/network/org.freedesktop.network1.policy:155
 msgid "Authentication is required to renew dynamic addresses."
 msgstr "Wymagane jest uwierzytelnienie, aby odnowić adresy dynamiczne."
 
-#: src/network/org.freedesktop.network1.policy:154
+#: src/network/org.freedesktop.network1.policy:165
 msgid "Reload network settings"
 msgstr "Ponowne wczytanie ustawień sieci"
 
-#: src/network/org.freedesktop.network1.policy:155
+#: src/network/org.freedesktop.network1.policy:166
 msgid "Authentication is required to reload network settings."
 msgstr "Wymagane jest uwierzytelnienie, aby ponownie wczytać ustawienia sieci."
 
-#: src/network/org.freedesktop.network1.policy:165
+#: src/network/org.freedesktop.network1.policy:176
 msgid "Reconfigure network interface"
 msgstr "Ponowna konfiguracja interfejsu sieciowego"
 
-#: src/network/org.freedesktop.network1.policy:166
+#: src/network/org.freedesktop.network1.policy:177
 msgid "Authentication is required to reconfigure network interface."
 msgstr ""
 "Wymagane jest uwierzytelnienie, aby ponownie skonfigurować interfejs "

src/core/main.c

@@ -318,7 +318,6 @@ static int set_machine_id(const char *m) {
 }
 
 static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
-
         int r;
 
         assert(key);
@@ -330,10 +329,8 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat
 
                 if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
                         log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value);
-                else if (in_initrd() == !!startswith(key, "rd.")) {
-                        if (free_and_strdup(&arg_default_unit, value) < 0)
-                                return log_oom();
-                }
+                else if (in_initrd() == !!startswith(key, "rd."))
+                        return free_and_strdup_warn(&arg_default_unit, value);
 
         } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) {
 
@@ -510,7 +507,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat
                 /* SysV compatibility */
                 target = runlevel_to_target(key);
                 if (target)
-                        return free_and_strdup(&arg_default_unit, target);
+                        return free_and_strdup_warn(&arg_default_unit, target);
         }
 
         return 0;
@@ -987,11 +984,9 @@ static int parse_argv(int argc, char *argv[]) {
                 case 'b':
                 case 's':
                 case 'z':
-                        /* Just to eat away the sysvinit kernel
-                         * cmdline args without getopt() error
-                         * messages that we'll parse in
-                         * parse_proc_cmdline_word() or ignore. */
-
+                        /* Just to eat away the sysvinit kernel cmdline args that we'll parse in
+                         * parse_proc_cmdline_item() or ignore, without any getopt() error messages.
+                         */
                 case '?':
                         if (getpid_cached() != 1)
                                 return -EINVAL;

src/network/networkd-dhcp4.c

@@ -323,6 +323,9 @@ static int link_set_dhcp_routes(Link *link) {
                 }
         }
 
+        if (!link->network->dhcp_use_gateway)
+                return 0;
+
         r = sd_dhcp_lease_get_router(link->dhcp_lease, &router);
         if (IN_SET(r, 0, -ENODATA))
                 log_link_info(link, "DHCP: No gateway received from DHCP server.");
@@ -451,7 +454,7 @@ static int dhcp_remove_router(Link *link, sd_dhcp_lease *lease, const struct in_
         assert(link);
         assert(address);
 
-        if (!link->network->dhcp_use_routes)
+        if (!link->network->dhcp_use_gateway)
                 return 0;
 
         r = sd_dhcp_lease_get_router(lease, &router);

src/network/networkd-network-gperf.gperf

@@ -163,6 +163,7 @@ DHCPv4.UseMTU,                               config_parse_bool,
 DHCPv4.UseHostname,                          config_parse_bool,                                        0,                             offsetof(Network, dhcp_use_hostname)
 DHCPv4.UseDomains,                           config_parse_dhcp_use_domains,                            0,                             offsetof(Network, dhcp_use_domains)
 DHCPv4.UseRoutes,                            config_parse_bool,                                        0,                             offsetof(Network, dhcp_use_routes)
+DHCPv4.UseGateway,                           config_parse_bool,                                        0,                             offsetof(Network, dhcp_use_gateway)
 DHCPv4.RequestOptions,                       config_parse_dhcp_request_options,                        0,                             0
 DHCPv4.Anonymize,                            config_parse_bool,                                        0,                             offsetof(Network, dhcp_anonymize)
 DHCPv4.SendHostname,                         config_parse_bool,                                        0,                             offsetof(Network, dhcp_send_hostname)

src/network/networkd-network.c

@@ -384,6 +384,7 @@ int network_load_one(Manager *manager, OrderedHashmap **networks, const char *fi
                 .dhcp_use_dns = true,
                 .dhcp_use_hostname = true,
                 .dhcp_use_routes = true,
+                .dhcp_use_gateway = true,
                 /* NOTE: this var might be overwritten by network_apply_anonymize_if_set */
                 .dhcp_send_hostname = true,
                 .dhcp_send_release = true,

src/network/networkd-network.h

@@ -109,6 +109,7 @@ struct Network {
         bool dhcp_use_sip;
         bool dhcp_use_mtu;
         bool dhcp_use_routes;
+        bool dhcp_use_gateway;
         bool dhcp_use_timezone;
         bool rapid_commit;
         bool dhcp_use_hostname;

src/systemctl/systemctl.c

@@ -2065,22 +2065,55 @@ static int list_machines(int argc, char *argv[], void *userdata) {
         return rc;
 }
 
-static int get_default(int argc, char *argv[], void *userdata) {
-        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
-        _cleanup_free_ char *_path = NULL;
-        const char *path;
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
+        char **ret = data;
+
+        if (streq(key, "systemd.unit")) {
+                if (proc_cmdline_value_missing(key, value))
+                        return 0;
+                if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
+                        return log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value);
+
+                return free_and_strdup_warn(ret, key);
+
+        } else if (!value) {
+                if (runlevel_to_target(key))
+                        return free_and_strdup_warn(ret, key);
+        }
+
+        return 0;
+}
+
+static void emit_cmdline_warning(void) {
+        if (arg_quiet || arg_root)
+                /* don't bother checking the commandline if we're operating on a container */
+                return;
+
+        _cleanup_free_ char *override = NULL;
+        int r;
+
+        r = proc_cmdline_parse(parse_proc_cmdline_item, &override, 0);
+        if (r < 0)
+                log_debug_errno(r, "Failed to parse kernel command line, ignoring: %m");
+        if (override)
+                log_notice("Note: found \"%s\" on the kernel commandline, which overrides the default unit.",
+                           override);
+}
+
+static int determine_default(char **ret_name) {
         int r;
 
         if (install_client_side()) {
-                r = unit_file_get_default(arg_scope, arg_root, &_path);
+                r = unit_file_get_default(arg_scope, arg_root, ret_name);
                 if (r < 0)
                         return log_error_errno(r, "Failed to get default target: %m");
-                path = _path;
+                return 0;
 
-                r = 0;
         } else {
-                _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
                 sd_bus *bus;
+                _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+                _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+                const char *name;
 
                 r = acquire_bus(BUS_MANAGER, &bus);
                 if (r < 0)
@@ -2098,13 +2131,25 @@ static int get_default(int argc, char *argv[], void *userdata) {
                 if (r < 0)
                         return log_error_errno(r, "Failed to get default target: %s", bus_error_message(&error, r));
 
-                r = sd_bus_message_read(reply, "s", &path);
+                r = sd_bus_message_read(reply, "s", &name);
                 if (r < 0)
                         return bus_log_parse_error(r);
-        }
 
-        if (path)
-                printf("%s\n", path);
+                return free_and_strdup_warn(ret_name, name);
+        }
+}
+
+static int get_default(int argc, char *argv[], void *userdata) {
+        _cleanup_free_ char *name = NULL;
+        int r;
+
+        r = determine_default(&name);
+        if (r < 0)
+                return r;
+
+        printf("%s\n", name);
+
+        emit_cmdline_warning();
 
         return 0;
 }
@@ -2164,6 +2209,19 @@ static int set_default(int argc, char *argv[], void *userdata) {
                         r = 0;
         }
 
+        emit_cmdline_warning();
+
+        if (!arg_quiet) {
+                _cleanup_free_ char *final = NULL;
+
+                r = determine_default(&final);
+                if (r < 0)
+                        return r;
+
+                if (!streq(final, unit))
+                        log_notice("Note: \"%s\" is the default unit (possibly a runtime override).", final);
+        }
+
 finish:
         unit_file_changes_free(changes, n_changes);
 

test/fuzz/fuzz-network-parser/directives.network

@@ -73,6 +73,7 @@ UseDNS=
 RoutesToDNS=
 UseDomains=
 UseRoutes=
+UseGateway=
 IAID=
 UserClass=
 UseNTP=

test/test-network/conf/dhcp-client-ipv4-use-gateway-no.network

@@ -0,0 +1,9 @@
+[Match]
+Name=veth99
+
+[Network]
+DHCP=ipv4
+IPv6AcceptRA=false
+
+[DHCPv4]
+UseGateway=no

test/test-network/systemd-networkd-tests.py

@@ -2921,6 +2921,7 @@ class NetworkdDHCPClientTests(unittest.TestCase, Utilities):
         'dhcp-client-ipv4-dhcp-settings.network',
         'dhcp-client-ipv4-only-ipv6-disabled.network',
         'dhcp-client-ipv4-only.network',
+        'dhcp-client-ipv4-use-gateway-no.network',
         'dhcp-client-ipv4-use-routes-no.network',
         'dhcp-client-ipv6-only.network',
         'dhcp-client-ipv6-rapid-commit.network',
@@ -3040,6 +3041,19 @@ class NetworkdDHCPClientTests(unittest.TestCase, Utilities):
         self.assertRegex(output, r'default via 192.168.5.1 proto dhcp src 192.168.5.181 metric 1024')
         self.assertRegex(output, r'192.168.5.1 proto dhcp scope link src 192.168.5.181 metric 1024')
 
+    def test_dhcp_client_ipv4_use_gateway_no(self):
+        copy_unit_to_networkd_unit_path('25-veth.netdev', 'dhcp-server-veth-peer.network', 'dhcp-client-ipv4-use-gateway-no.network')
+
+        start_networkd()
+        self.wait_online(['veth-peer:carrier'])
+        start_dnsmasq(additional_options='--dhcp-option=option:dns-server,192.168.5.6,192.168.5.7', lease_time='2m')
+        self.wait_online(['veth99:routable', 'veth-peer:routable'])
+
+        output = check_output('ip route show dev veth99')
+        print(output)
+        self.assertRegex(output, r'192.168.5.0/24 via 192.168.5.5 proto dhcp src 192.168.5.181 metric 1024')
+        self.assertNotRegex(output, r'default via 192.168.5.1')
+
     def test_dhcp_client_ipv4_ipv6(self):
         copy_unit_to_networkd_unit_path('25-veth.netdev', 'dhcp-server-veth-peer.network', 'dhcp-client-ipv6-only.network',
                                         'dhcp-client-ipv4-only.network')