Merge pull request #16179 from keszybz/auto-suspend-hwdb

Convert autosuspend rules to hwdb

.github/workflows/ubuntu-build-check.sh

@@ -102,7 +102,7 @@ for args in "${ARGS[@]}"; do
     SECONDS=0
 
     info "Checking build with $args"
-    if ! AR="$AR" CC="$CC" CXX="$CXX" meson -Dtests=unsafe -Dslow-tests=true --werror $args build; then
+    if ! AR="$AR" CC="$CC" CXX="$CXX" CFLAGS="-Werror" CXXFLAGS="-Werror" meson -Dtests=unsafe -Dslow-tests=true --werror $args build; then
         fatal "meson failed with $args"
     fi
 

NEWS

@@ -87,6 +87,12 @@ CHANGES WITH 246 in spe:
           used, the DNS-over-TLS certificate is validated to match the
           specified hostname.
 
+        * systemd-resolved may be configured to forward single-label DNS names.
+          This is not standard-conformant, but may make sense in setups where
+          public DNS servers are not used.
+
+        * systemd-resolved's DNS-over-TLS support gained SNI validation.
+
         * The fs.suid_dumpable sysctl is set to 2 / "suidsafe". This allows
           systemd-coredump to save core files for suid processes. When saving
           the core file, systemd-coredump will use the effective uid and gid of
@@ -538,8 +544,6 @@ CHANGES WITH 245:
         * systemd-sysusers gained support for creating users with the primary
           group named differently than the user.
 
-        * systemd-resolved's DNS-over-TLS support gained SNI validation.
-
         * systemd-growfs (i.e. the x-systemd.growfs mount option in /etc/fstab)
           gained support for growing XFS partitions. Previously it supported
           only ext4 and btrfs partitions.

hwdb.d/60-autosuspend.hwdb

@@ -0,0 +1,44 @@
+# This file is part of systemd.
+#
+# The lookup keys are $MODALIAS strings, see udev's hwdb builtin.
+#
+# Match string formats:
+# <subsystem>:<modalias>
+#
+# pci:v<vendor>d<device>
+# usb:v<vendor>p<product>
+#
+# To add local entries, create a new file
+#   /etc/udev/hwdb.d/61-autosuspend-local.hwdb
+# and add your rules there. To load the new rules execute (as root):
+#   systemd-hwdb update
+#   udevadm trigger /dev/…
+#
+# If your changes are generally applicable, preferably send them as a pull
+# request to
+#   https://github.com/systemd/systemd
+# or create a bug report on https://github.com/systemd/systemd/issues and
+# include your new rules, a description of the device, and the output of
+#   udevadm info
+# the device.
+#
+# Allowed properties are:
+#    ID_AUTOSUSPEND=1
+
+#
+# Sort by brand, model
+
+#########################################
+# Alcor
+#########################################
+
+# AU9540 Smartcard Reader
+usb:v058Fp9540*
+ ID_AUTOSUSPEND=1
+
+#########################################
+# Wacom
+#########################################
+
+usb:v056Ap51A0*
+ ID_AUTOSUSPEND=1

hwdb.d/meson.build

@@ -1,6 +1,9 @@
 # SPDX-License-Identifier: LGPL-2.1+
 
-hwdb_files = files('''
+# Those files right now are not supported by the grammar. Also,
+# they are very long but quite repetitive and the parser is not very fast.
+# So we don't "test" them.
+hwdb_files_notest = files('''
         20-pci-vendor-model.hwdb
         20-pci-classes.hwdb
         20-usb-vendor-model.hwdb
@@ -12,6 +15,10 @@ hwdb_files = files('''
         20-OUI.hwdb
         20-net-ifname.hwdb
         20-vmbus-class.hwdb
+'''.split())
+
+hwdb_files_test = files('''
+        60-autosuspend.hwdb
         60-evdev.hwdb
         60-input-id.hwdb
         60-keyboard.hwdb
@@ -23,7 +30,16 @@ hwdb_files = files('''
 '''.split())
 
 if conf.get('ENABLE_HWDB') == 1
-        install_data(hwdb_files,
+        auto_suspend_rules = custom_target(
+                '60-autosuspend-chromiumos.hwdb',
+                output : '60-autosuspend-chromiumos.hwdb',
+                command : make_autosuspend_rules_py,
+                capture : true,
+                install : true,
+                install_dir: udevhwdbdir)
+
+        install_data(hwdb_files_notest,
+                     hwdb_files_test,
                      install_dir : udevhwdbdir)
 
         meson.add_install_script('sh', '-c',
@@ -32,15 +48,15 @@ if conf.get('ENABLE_HWDB') == 1
         meson.add_install_script('sh', '-c',
                                  'test -n "$DESTDIR" || @0@/systemd-hwdb update'
                                  .format(rootbindir))
-endif
 
-############################################################
+        if want_tests != 'false'
-
+                parse_hwdb_py = find_program('parse_hwdb.py')
-parse_hwdb_py = find_program('parse_hwdb.py')
-if want_tests != 'false'
                 test('parse-hwdb',
                      parse_hwdb_py,
+                     args : [hwdb_files_test,
+                             auto_suspend_rules],
                      timeout : 90)
+        endif
 endif
 
 ############################################################

hwdb.d/parse_hwdb.py

@@ -59,6 +59,7 @@ REAL = Combine((INTEGER + Optional('.' + Optional(INTEGER))) ^ ('.' + INTEGER))
 SIGNED_REAL = Combine(Optional(Word('-+')) + REAL)
 UDEV_TAG = Word(string.ascii_uppercase, alphanums + '_')
 
+# Those patterns are used in type-specific matches
 TYPES = {'mouse':    ('usb', 'bluetooth', 'ps2', '*'),
          'evdev':    ('name', 'atkbd', 'input'),
          'id-input': ('modalias'),
@@ -68,13 +69,27 @@ TYPES = {'mouse':    ('usb', 'bluetooth', 'ps2', '*'),
          'sensor':   ('modalias', ),
         }
 
+# Patterns that are used to set general properties on a device
+GENERAL_MATCHES = {'acpi',
+                   'bluetooth',
+                   'usb',
+                   'pci',
+                   'sdio',
+                   'vmbus',
+                   'OUI',
+                   }
+
 @lru_cache()
 def hwdb_grammar():
     ParserElement.setDefaultWhitespaceChars('')
 
     prefix = Or(category + ':' + Or(conn) + ':'
                 for category, conn in TYPES.items())
-    matchline = Combine(prefix + Word(printables + ' ' + '®')) + EOL
+
+    matchline_typed = Combine(prefix + Word(printables + ' ' + '®'))
+    matchline_general = Combine(Or(GENERAL_MATCHES) + ':' + Word(printables))
+    matchline = (matchline_typed | matchline_general) + EOL
+
     propertyline = (White(' ', exact=1).suppress() +
                     Combine(UDEV_TAG - '=' - Word(alphanums + '_=:@*.!-;, "') - Optional(pythonStyleComment)) +
                     EOL)
@@ -102,6 +117,7 @@ def property_grammar():
              ('MOUSE_WHEEL_CLICK_ANGLE_HORIZONTAL', INTEGER),
              ('MOUSE_WHEEL_CLICK_COUNT', INTEGER),
              ('MOUSE_WHEEL_CLICK_COUNT_HORIZONTAL', INTEGER),
+             ('ID_AUTOSUSPEND', Literal('1')),
              ('ID_INPUT', Literal('1')),
              ('ID_INPUT_ACCELEROMETER', Literal('1')),
              ('ID_INPUT_JOYSTICK', Literal('1')),

man/resolved.conf.xml

@@ -67,20 +67,28 @@
 
       <varlistentry>
         <term><varname>Domains=</varname></term>
-        <listitem><para>A space-separated list of domains. These domains are used as search suffixes when resolving
+        <listitem><para>A space-separated list of domains optionally prefixed with <literal>~</literal>,
-        single-label hostnames (domain names which contain no dot), in order to qualify them into fully-qualified
+        used for two distinct purposes described below. Defaults to the empty list.</para>
-        domain names (FQDNs). Search domains are strictly processed in the order they are specified, until the name
-        with the suffix appended is found. For compatibility reasons, if this setting is not specified, the search
-        domains listed in <filename>/etc/resolv.conf</filename> are used instead, if that file exists and any domains
-        are configured in it. This setting defaults to the empty list.</para>
 
-        <para>Specified domain names may optionally be prefixed with <literal>~</literal>. In this case they do not
+        <para>Any domains <emphasis>not</emphasis> prefixed with <literal>~</literal> are used as search
-        define a search path, but preferably direct DNS queries for the indicated domains to the DNS servers configured
+        suffixes when resolving single-label hostnames (domain names which contain no dot), in order to
-        with the system <varname>DNS=</varname> setting (see above), in case additional, suitable per-link DNS servers
+        qualify them into fully-qualified domain names (FQDNs). These "search domains" are strictly processed
-        are known. If no per-link DNS servers are known using the <literal>~</literal> syntax has no effect. Use the
+        in the order they are specified in, until the name with the suffix appended is found. For
-        construct <literal>~.</literal> (which is composed of <literal>~</literal> to indicate a routing domain and
+        compatibility reasons, if this setting is not specified, the search domains listed in
-        <literal>.</literal> to indicate the DNS root domain that is the implied suffix of all DNS domains) to use the
+        <filename>/etc/resolv.conf</filename> with the <varname>search</varname> keyword are used instead, if
-        system DNS server defined with <varname>DNS=</varname> preferably for all domains.</para></listitem>
+        that file exists and any domains are configured in it.</para>
+
+        <para>The domains prefixed with <literal>~</literal> are called "routing domains". All domains listed
+        here (both search domains and routing domains after removing the <literal>~</literal> prefix) define
+        a search path that preferably directs DNS queries to this inteface. This search path has an effect
+        only when suitable per-link DNS servers are known. Such servers may be defined through the
+        <varname>DNS=</varname> setting (see above) and dynamically at run time, for example from DHCP
+        leases. If no per-link DNS servers are known, routing domains have no effect.</para>
+
+        <para>Use the construct <literal>~.</literal> (which is composed from <literal>~</literal> to
+        indicate a routing domain and <literal>.</literal> to indicate the DNS root domain that is the
+        implied suffix of all DNS domains) to use the DNS servers defined for this link preferably for all
+        domains.</para></listitem>
       </varlistentry>
 
       <varlistentry>
@@ -258,11 +266,28 @@
 
       <varlistentry>
         <term><varname>ReadEtcHosts=</varname></term>
-        <listitem><para>Takes a boolean argument. If <literal>yes</literal> (the default), the DNS stub resolver will read
+        <listitem><para>Takes a boolean argument. If <literal>yes</literal> (the default),
-        <filename>/etc/hosts</filename>, and try to resolve hosts or address by using the entries in the file before
+        <command>systemd-resolved</command> will read <filename>/etc/hosts</filename>, and try to resolve
-        sending query to DNS servers.</para></listitem>
+        hosts or address by using the entries in the file before sending query to DNS servers.
+        </para></listitem>
       </varlistentry>
 
+      <varlistentry>
+        <term><varname>ResolveUnicastSingleLabel=</varname></term>
+        <listitem><para>Takes a boolean argument. When false (the default),
+        <command>systemd-resolved</command> will not resolve A and AAAA queries for single-label names over
+        classic DNS. Note that such names may still be resolved if search domains are specified (see
+        <varname>Domains=</varname> above), or using other mechanisms, in particular via LLMNR or from
+        <filename>/etc/hosts</filename>. When true, queries for single-label names will be forwarded to
+        global DNS servers even if no search domains are defined.
+        </para>
+
+        <para>This option is provided for compatibility with configurations where <emphasis>public DNS
+        servers are not used</emphasis>. Forwarding single-label names to servers not under your control is
+        not standard-conformant, see <ulink
+        url="https://www.iab.org/documents/correspondence-reports-documents/2013-2/iab-statement-dotless-domains-considered-harmful/">IAB
+        Statement</ulink>, and may create a privacy and security risk.</para></listitem>
+      </varlistentry>
     </variablelist>
   </refsect1>
 

man/systemd-resolved.service.xml

@@ -135,14 +135,16 @@
       IPv6.</para></listitem>
 
       <listitem><para>Resolution of address records (A and AAAA) via unicast DNS (i.e. not LLMNR or
-      MulticastDNS) for non-synthesized single-label names is only allowed for non-top-level domains. This
+      MulticastDNS) for non-synthesized single-label names is allowed for non-top-level domains. This means
-      means that such records can only be resolved when search domains are defined. For any interface which
+      that such records can be resolved when search domains are defined. For any interface which defines
-      defines search domains, such look-ups are routed to that interface, suffixed with each of the search
+      search domains, such look-ups are routed to that interface, suffixed with each of the search domains
-      domains defined on that interface in turn. When global search domains are defined, such look-ups are
+      defined on that interface in turn. When global search domains are defined, such look-ups are routed to
-      routed to all interfaces, suffixed by each of the global search domains in turn. The details of which
+      all interfaces, suffixed by each of the global search domains in turn. Additionally, lookup of
-      servers are queried and how the final reply is chosen are described below. Note that this means that
+      single-label names via unicast DNS may be enabled with the
-      address queries for single-label names are never sent out to remote DNS servers, and if no search
+      <varname>ResolveUnicastSingleLabel=yes</varname> setting. The details of which servers are queried and
-      domains are defined, resolution will fail.</para></listitem>
+      how the final reply is chosen are described below. Note that this means that address queries for
+      single-label names are never sent out to remote DNS servers by default, and if no search domains are
+      defined, resolution will fail.</para></listitem>
 
       <listitem><para>Other multi-label names are routed to all local interfaces that have a DNS server
       configured, plus the globally configured DNS servers if there are any. Note that by default, lookups for

rules.d/50-udev-default.rules.in

@@ -10,8 +10,9 @@ SUBSYSTEM=="virtio-ports", KERNEL=="vport*", ATTR{name}=="?*", SYMLINK+="virtio-
 SUBSYSTEM=="rtc", ATTR{hctosys}=="1", SYMLINK+="rtc"
 SUBSYSTEM=="rtc", KERNEL=="rtc0", SYMLINK+="rtc", OPTIONS+="link_priority=-100"
 
-SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", IMPORT{builtin}="usb_id", IMPORT{builtin}="hwdb --subsystem=usb"
+SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", IMPORT{builtin}="usb_id", IMPORT{builtin}="hwdb --subsystem=usb", GOTO="default_hwdb_imported"
 ENV{MODALIAS}!="", IMPORT{builtin}="hwdb --subsystem=$env{SUBSYSTEM}"
+LABEL="default_hwdb_imported"
 
 ACTION!="add", GOTO="default_end"
 

rules.d/60-autosuspend.rules

@@ -0,0 +1,14 @@
+# do not edit this file, it will be overwritten on update
+
+ACTION!="add", GOTO="autosuspend_end"
+
+# I2C rules
+SUBSYSTEM=="i2c", ATTR{name}=="cyapa", \
+  ATTR{power/control}="on", GOTO="autosuspend_end"
+
+# Enable autosuspend if hwdb says so. Here we are relying on
+# the hwdb import done earlier based on MODALIAS.
+ENV{ID_AUTOSUSPEND}=="1", TEST=="power/control", \
+  ATTR{power/control}="auto"
+
+LABEL="autosuspend_end"

rules.d/60-serial.rules

@@ -4,8 +4,9 @@ ACTION=="remove", GOTO="serial_end"
 SUBSYSTEM!="tty", GOTO="serial_end"
 
 SUBSYSTEMS=="pci", ENV{ID_BUS}="pci", ENV{ID_VENDOR_ID}="$attr{vendor}", ENV{ID_MODEL_ID}="$attr{device}"
-SUBSYSTEMS=="pci", IMPORT{builtin}="hwdb --subsystem=pci"
+# We already ran the hwdb builtin for devices with MODALIAS in 50-default.rules.
-SUBSYSTEMS=="usb", IMPORT{builtin}="usb_id", IMPORT{builtin}="hwdb --subsystem=usb"
+# Let's cover the remaining case here, where we walk up the tree to find a node with $MODALIAS.
+ENV{MODALIAS}=="", SUBSYSTEMS=="pci", IMPORT{builtin}="hwdb --subsystem=pci"
 
 # /dev/serial/by-path/, /dev/serial/by-id/ for USB devices
 KERNEL!="ttyUSB[0-9]*|ttyACM[0-9]*", GOTO="serial_end"

rules.d/61-autosuspend-manual.rules

@@ -1,19 +0,0 @@
-# This udev rule is for any devices that should enter automatic suspend
-# but are not already included in generated rules from Chromium OS via
-# tools/make-autosuspend-rules.py
-#
-
-ACTION!="add", GOTO="autosuspend_manual_end"
-SUBSYSTEM!="usb", GOTO="autosuspend_manual_end"
-
-SUBSYSTEM=="usb", GOTO="autosuspend_manual_usb"
-
-# USB rules
-LABEL="autosuspend_manual_usb"
-GOTO="autosuspend_manual_end"
-
-# Enable autosuspend
-LABEL="autosuspend_manual_enable"
-TEST=="power/control", ATTR{power/control}="auto", GOTO="autosuspend_manual_end"
-
-LABEL="autosuspend_manual_end"

rules.d/meson.build

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: LGPL-2.1+
 
 rules = files('''
+        60-autosuspend.rules
         60-block.rules
         60-cdrom_id.rules
         60-drm.rules
@@ -14,7 +15,6 @@ rules = files('''
         60-persistent-v4l.rules
         60-sensor.rules
         60-serial.rules
-        61-autosuspend-manual.rules
         70-joystick.rules
         70-mouse.rules
         70-touchpad.rules
@@ -45,11 +45,3 @@ foreach file : rules_in
                      install_dir : udevrulesdir)
         all_rules += gen
 endforeach
-
-auto_suspend_rules = custom_target(
-        '60-autosuspend-chromiumos.rules',
-        output : '60-autosuspend-chromiumos.rules',
-        command : make_autosuspend_rules_py,
-        capture : true,
-        install : true,
-        install_dir: [udevrulesdir])

src/basic/log.c

@@ -7,6 +7,7 @@
 #include <stdarg.h>
 #include <stddef.h>
 #include <sys/signalfd.h>
+#include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/uio.h>
 #include <sys/un.h>
@@ -219,6 +220,32 @@ fail:
         return r;
 }
 
+static bool stderr_is_journal(void) {
+        _cleanup_free_ char *w = NULL;
+        const char *e;
+        uint64_t dev, ino;
+        struct stat st;
+
+        e = getenv("JOURNAL_STREAM");
+        if (!e)
+                return false;
+
+        if (extract_first_word(&e, &w, ":", EXTRACT_DONT_COALESCE_SEPARATORS) <= 0)
+                return false;
+        if (!e)
+                return false;
+
+        if (safe_atou64(w, &dev) < 0)
+                return false;
+        if (safe_atou64(e, &ino) < 0)
+                return false;
+
+        if (fstat(STDERR_FILENO, &st) < 0)
+                return false;
+
+        return st.st_dev == dev && st.st_ino == ino;
+}
+
 int log_open(void) {
         int r;
 
@@ -238,9 +265,7 @@ int log_open(void) {
                 return 0;
         }
 
-        if (log_target != LOG_TARGET_AUTO ||
+        if (log_target != LOG_TARGET_AUTO || getpid_cached() == 1 || stderr_is_journal()) {
-            getpid_cached() == 1 ||
-            isatty(STDERR_FILENO) <= 0) {
 
                 if (!prohibit_ipc &&
                     IN_SET(log_target, LOG_TARGET_AUTO,

src/core/dbus-manager.c

@@ -234,14 +234,12 @@ static int property_get_show_status(
                 sd_bus_error *error) {
 
         Manager *m = userdata;
-        int b;
 
+        assert(m);
         assert(bus);
         assert(reply);
-        assert(m);
 
-        b = IN_SET(m->show_status, SHOW_STATUS_TEMPORARY, SHOW_STATUS_YES);
+        return sd_bus_message_append(reply, "b", manager_get_show_status_on(m));
-        return sd_bus_message_append_basic(reply, 'b', &b);
 }
 
 static int property_get_runtime_watchdog(
@@ -311,7 +309,7 @@ static int property_set_watchdog(Manager *m, WatchdogType type, sd_bus_message *
         if (r < 0)
                 return r;
 
-        return manager_set_watchdog_overridden(m, type, timeout);
+        return manager_override_watchdog(m, type, timeout);
 }
 
 static int property_set_runtime_watchdog(
@@ -2452,6 +2450,30 @@ static int method_abandon_scope(sd_bus_message *message, void *userdata, sd_bus_
         return bus_scope_method_abandon(message, u, error);
 }
 
+static int method_set_show_status(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Manager *m = userdata;
+        ShowStatus mode = _SHOW_STATUS_INVALID;
+        const char *t;
+        int r;
+
+        assert(m);
+        assert(message);
+
+        r = sd_bus_message_read(message, "s", &t);
+        if (r < 0)
+                return r;
+
+        if (!isempty(t)) {
+                mode = show_status_from_string(t);
+                if (mode < 0)
+                        return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid show status '%s'", t);
+        }
+
+        manager_override_show_status(m, mode, "bus");
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
 const sd_bus_vtable bus_manager_vtable[] = {
         SD_BUS_VTABLE_START(0),
 
@@ -2786,6 +2808,12 @@ const sd_bus_vtable bus_manager_vtable[] = {
                       NULL,
                       method_reset_failed,
                       SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_NAMES("SetShowStatus",
+                                 "s",
+                                 SD_BUS_PARAM(mode),
+                                 NULL,,
+                                 method_set_show_status,
+                                 SD_BUS_VTABLE_CAPABILITY(CAP_SYS_ADMIN)),
         SD_BUS_METHOD_WITH_NAMES("ListUnits",
                                  NULL,,
                                  "a(ssssssouso)",

src/core/manager.c

@@ -779,6 +779,8 @@ int manager_new(UnitFileScope scope, ManagerTestRunFlags test_run_flags, Manager
                 .watchdog_overridden[WATCHDOG_REBOOT] = USEC_INFINITY,
                 .watchdog_overridden[WATCHDOG_KEXEC] = USEC_INFINITY,
 
+                .show_status_overridden = _SHOW_STATUS_INVALID,
+
                 .notify_fd = -1,
                 .cgroups_agent_fd = -1,
                 .signal_fd = -1,
@@ -2759,11 +2761,11 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t
                 switch (sfsi.ssi_signo - SIGRTMIN) {
 
                 case 20:
-                        manager_set_show_status(m, SHOW_STATUS_YES, "signal");
+                        manager_override_show_status(m, SHOW_STATUS_YES, "signal");
                         break;
 
                 case 21:
-                        manager_set_show_status(m, SHOW_STATUS_NO, "signal");
+                        manager_override_show_status(m, SHOW_STATUS_NO, "signal");
                         break;
 
                 case 22:
@@ -3219,9 +3221,9 @@ int manager_serialize(
         /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
         (void) serialize_bool(f, "honor-device-enumeration", !switching_root);
 
-        t = show_status_to_string(m->show_status);
+        if (m->show_status_overridden != _SHOW_STATUS_INVALID)
-        if (t)
+                (void) serialize_item(f, "show-status-overridden",
-                (void) serialize_item(f, "show-status", t);
+                                      show_status_to_string(m->show_status_overridden));
 
         if (m->log_level_overridden)
                 (void) serialize_item_format(f, "log-level-override", "%i", log_get_max_level());
@@ -3399,7 +3401,7 @@ void manager_set_watchdog(Manager *m, WatchdogType t, usec_t timeout) {
                 m->watchdog[t] = timeout;
 }
 
-int manager_set_watchdog_overridden(Manager *m, WatchdogType t, usec_t timeout) {
+int manager_override_watchdog(Manager *m, WatchdogType t, usec_t timeout) {
         int r = 0;
 
         assert(m);
@@ -3568,14 +3570,14 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
                         else
                                 m->honor_device_enumeration = b;
 
-                } else if ((val = startswith(l, "show-status="))) {
+                } else if ((val = startswith(l, "show-status-overridden="))) {
                         ShowStatus s;
 
                         s = show_status_from_string(val);
                         if (s < 0)
-                                log_notice("Failed to parse show-status flag '%s', ignoring.", val);
+                                log_notice("Failed to parse show-status-overridden flag '%s', ignoring.", val);
                         else
-                                manager_set_show_status(m, s, "deserialization");
+                                manager_override_show_status(m, s, "deserialize");
 
                 } else if ((val = startswith(l, "log-level-override="))) {
                         int level;
@@ -3601,7 +3603,7 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
                         if (deserialize_usec(val, &t) < 0)
                                 log_notice("Failed to parse runtime-watchdog-overridden value '%s', ignoring.", val);
                         else
-                                manager_set_watchdog_overridden(m, WATCHDOG_RUNTIME, t);
+                                manager_override_watchdog(m, WATCHDOG_RUNTIME, t);
 
                 } else if ((val = startswith(l, "reboot-watchdog-overridden="))) {
                         usec_t t;
@@ -3609,7 +3611,7 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
                         if (deserialize_usec(val, &t) < 0)
                                 log_notice("Failed to parse reboot-watchdog-overridden value '%s', ignoring.", val);
                         else
-                                manager_set_watchdog_overridden(m, WATCHDOG_REBOOT, t);
+                                manager_override_watchdog(m, WATCHDOG_REBOOT, t);
 
                 } else if ((val = startswith(l, "kexec-watchdog-overridden="))) {
                         usec_t t;
@@ -3617,7 +3619,7 @@ int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
                         if (deserialize_usec(val, &t) < 0)
                                 log_notice("Failed to parse kexec-watchdog-overridden value '%s', ignoring.", val);
                         else
-                                manager_set_watchdog_overridden(m, WATCHDOG_KEXEC, t);
+                                manager_override_watchdog(m, WATCHDOG_KEXEC, t);
 
                 } else if (startswith(l, "env=")) {
                         r = deserialize_environment(l + 4, &m->client_environment);
@@ -4264,49 +4266,78 @@ void manager_recheck_journal(Manager *m) {
         log_open();
 }
 
-void manager_set_show_status(Manager *m, ShowStatus mode, const char *reason) {
+static ShowStatus manager_get_show_status(Manager *m) {
         assert(m);
-        assert(mode >= 0 && mode < _SHOW_STATUS_MAX);
 
-        if (!MANAGER_IS_SYSTEM(m))
+        if (MANAGER_IS_USER(m))
-                return;
+                return _SHOW_STATUS_INVALID;
 
-        if (mode == m->show_status)
+        if (m->show_status_overridden != _SHOW_STATUS_INVALID)
-                return;
+                return m->show_status_overridden;
 
-        bool enabled = IN_SET(mode, SHOW_STATUS_TEMPORARY, SHOW_STATUS_YES);
+        return m->show_status;
-        log_debug("%s (%s) showing of status (%s).",
+}
-                  enabled ? "Enabling" : "Disabling",
-                  strna(show_status_to_string(mode)),
-                  reason);
-        m->show_status = mode;
 
-        if (enabled)
+bool manager_get_show_status_on(Manager *m) {
+        assert(m);
+
+        return show_status_on(manager_get_show_status(m));
+}
+
+static void set_show_status_marker(bool b) {
+        if (b)
                 (void) touch("/run/systemd/show-status");
         else
                 (void) unlink("/run/systemd/show-status");
 }
 
-static bool manager_get_show_status(Manager *m, StatusType type) {
+void manager_set_show_status(Manager *m, ShowStatus mode, const char *reason) {
         assert(m);
+        assert(reason);
+        assert(mode >= 0 && mode < _SHOW_STATUS_MAX);
 
-        if (!MANAGER_IS_SYSTEM(m))
+        if (MANAGER_IS_USER(m))
-                return false;
+                return;
 
-        if (m->no_console_output)
+        if (mode == m->show_status)
-                return false;
+                return;
 
-        if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
+        if (m->show_status_overridden == _SHOW_STATUS_INVALID) {
-                return false;
+                bool enabled;
 
-        /* If we cannot find out the status properly, just proceed. */
+                enabled = show_status_on(mode);
-        if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
+                log_debug("%s (%s) showing of status (%s).",
-                return false;
+                          enabled ? "Enabling" : "Disabling",
+                          strna(show_status_to_string(mode)),
+                          reason);
 
-        if (type == STATUS_TYPE_NOTICE && m->show_status != SHOW_STATUS_NO)
+                set_show_status_marker(enabled);
-                return true;
+        }
 
-        return show_status_on(m->show_status);
+        m->show_status = mode;
+}
+
+void manager_override_show_status(Manager *m, ShowStatus mode, const char *reason) {
+        assert(m);
+        assert(mode < _SHOW_STATUS_MAX);
+
+        if (MANAGER_IS_USER(m))
+                return;
+
+        if (mode == m->show_status_overridden)
+                return;
+
+        m->show_status_overridden = mode;
+
+        if (mode == _SHOW_STATUS_INVALID)
+                mode = m->show_status;
+
+        log_debug("%s (%s) showing of status (%s).",
+                  m->show_status_overridden != _SHOW_STATUS_INVALID ? "Overriding" : "Restoring",
+                  strna(show_status_to_string(mode)),
+                  reason);
+
+        set_show_status_marker(show_status_on(mode));
 }
 
 const char *manager_get_confirm_spawn(Manager *m) {
@@ -4381,12 +4412,34 @@ bool manager_is_confirm_spawn_disabled(Manager *m) {
         return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0;
 }
 
+static bool manager_should_show_status(Manager *m, StatusType type) {
+        assert(m);
+
+        if (!MANAGER_IS_SYSTEM(m))
+                return false;
+
+        if (m->no_console_output)
+                return false;
+
+        if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
+                return false;
+
+        /* If we cannot find out the status properly, just proceed. */
+        if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
+                return false;
+
+        if (type == STATUS_TYPE_NOTICE && m->show_status != SHOW_STATUS_NO)
+                return true;
+
+        return manager_get_show_status_on(m);
+}
+
 void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
         va_list ap;
 
         /* If m is NULL, assume we're after shutdown and let the messages through. */
 
-        if (m && !manager_get_show_status(m, type))
+        if (m && !manager_should_show_status(m, type))
                 return;
 
         /* XXX We should totally drop the check for ephemeral here

src/core/manager.h

@@ -335,6 +335,7 @@ struct Manager {
         uint8_t return_value;
 
         ShowStatus show_status;
+        ShowStatus show_status_overridden;
         StatusUnitFormat status_unit_format;
         char *confirm_spawn;
         bool no_console_output;
@@ -512,7 +513,10 @@ void disable_printk_ratelimit(void);
 void manager_recheck_dbus(Manager *m);
 void manager_recheck_journal(Manager *m);
 
+bool manager_get_show_status_on(Manager *m);
 void manager_set_show_status(Manager *m, ShowStatus mode, const char *reason);
+void manager_override_show_status(Manager *m, ShowStatus mode, const char *reason);
+
 void manager_set_first_boot(Manager *m, bool b);
 
 void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) _printf_(4,5);
@@ -553,7 +557,7 @@ ManagerTimestamp manager_timestamp_initrd_mangle(ManagerTimestamp s);
 
 usec_t manager_get_watchdog(Manager *m, WatchdogType t);
 void manager_set_watchdog(Manager *m, WatchdogType t, usec_t timeout);
-int manager_set_watchdog_overridden(Manager *m, WatchdogType t, usec_t timeout);
+int manager_override_watchdog(Manager *m, WatchdogType t, usec_t timeout);
 
 const char* oom_policy_to_string(OOMPolicy i) _const_;
 OOMPolicy oom_policy_from_string(const char *s) _pure_;

src/core/org.freedesktop.systemd1.conf

@@ -318,6 +318,10 @@
                        send_interface="org.freedesktop.systemd1.Manager"
                        send_member="AddDependencyUnitFiles"/>
 
+                <allow send_destination="org.freedesktop.systemd1"
+                       send_interface="org.freedesktop.systemd1.Manager"
+                       send_member="SetShowStatus"/>
+
                 <!-- Managed via polkit or other criteria: org.freedesktop.systemd1.Job interface -->
 
                 <allow send_destination="org.freedesktop.systemd1"

src/network/networkd-dhcp6.c

@@ -1065,7 +1065,7 @@ static int dhcp6_assign_delegated_prefix(Link *link,
         address->in_addr.in6 = *prefix;
 
         if (!in_addr_is_null(AF_INET6, &link->network->dhcp6_delegation_prefix_token))
-                memcpy(&address->in_addr.in6.s6_addr + 8, &link->network->dhcp6_delegation_prefix_token.in6.s6_addr + 8, 8);
+                memcpy(address->in_addr.in6.s6_addr + 8, link->network->dhcp6_delegation_prefix_token.in6.s6_addr + 8, 8);
         else {
                 r = generate_ipv6_eui_64_address(link, &address->in_addr.in6);
                 if (r < 0)

src/resolve/resolved-dns-query.c

@@ -513,7 +513,7 @@ static int on_query_timeout(sd_event_source *s, usec_t usec, void *userdata) {
 }
 
 static int dns_query_add_candidate(DnsQuery *q, DnsScope *s) {
-        DnsQueryCandidate *c;
+        _cleanup_(dns_query_candidate_freep) DnsQueryCandidate *c = NULL;
         int r;
 
         assert(q);
@@ -524,24 +524,21 @@ static int dns_query_add_candidate(DnsQuery *q, DnsScope *s) {
                 return r;
 
         /* If this a single-label domain on DNS, we might append a suitable search domain first. */
-        if ((q->flags & SD_RESOLVED_NO_SEARCH) == 0 &&
+        if (!FLAGS_SET(q->flags, SD_RESOLVED_NO_SEARCH) &&
-            dns_scope_name_needs_search_domain(s, dns_question_first_name(q->question_idna))) {
+            dns_scope_name_wants_search_domain(s, dns_question_first_name(q->question_idna))) {
-                /* OK, we need a search domain now. Let's find one for this scope */
+                /* OK, we want a search domain now. Let's find one for this scope */
 
                 r = dns_query_candidate_next_search_domain(c);
-                if (r <= 0) /* if there's no search domain, then we won't add any transaction. */
+                if (r < 0)
-                        goto fail;
+                        return r;
         }
 
         r = dns_query_candidate_setup_transactions(c);
         if (r < 0)
-                goto fail;
-
-        return 0;
-
-fail:
-        dns_query_candidate_free(c);
                 return r;
+
+        TAKE_PTR(c);
+        return 0;
 }
 
 static int dns_query_synthesize_reply(DnsQuery *q, DnsTransactionState *state) {

src/resolve/resolved-dns-query.h

@@ -102,6 +102,8 @@ enum {
 };
 
 DnsQueryCandidate* dns_query_candidate_free(DnsQueryCandidate *c);
+DEFINE_TRIVIAL_CLEANUP_FUNC(DnsQueryCandidate*, dns_query_candidate_free);
+
 void dns_query_candidate_notify(DnsQueryCandidate *c);
 
 int dns_query_new(Manager *m, DnsQuery **q, DnsQuestion *question_utf8, DnsQuestion *question_idna, int family, uint64_t flags);

src/resolve/resolved-dns-scope.c

@@ -619,7 +619,7 @@ DnsScopeMatch dns_scope_good_domain(
                      manager_is_own_hostname(s->manager, domain) <= 0))  /* never resolve the local hostname via LLMNR */
                         return DNS_SCOPE_YES_BASE + 1; /* Return +1, as we consider ourselves authoritative
                                                         * for single-label names, i.e. one label. This is
-                                                        * particular relevant as it means a "." route on some
+                                                        * particularly relevant as it means a "." route on some
                                                         * other scope won't pull all traffic away from
                                                         * us. (If people actually want to pull traffic away
                                                         * from us they should turn off LLMNR on the
@@ -651,20 +651,21 @@ bool dns_scope_good_key(DnsScope *s, const DnsResourceKey *key) {
 
         if (s->protocol == DNS_PROTOCOL_DNS) {
 
-                /* On classic DNS, looking up non-address RRs is always
+                /* On classic DNS, looking up non-address RRs is always fine. (Specifically, we want to
-                 * fine. (Specifically, we want to permit looking up
+                 * permit looking up DNSKEY and DS records on the root and top-level domains.) */
-                 * DNSKEY and DS records on the root and top-level
-                 * domains.) */
                 if (!dns_resource_key_is_address(key))
                         return true;
 
-                /* However, we refuse to look up A and AAAA RRs on the
+                /* Unless explicitly overridden, we refuse to look up A and AAAA RRs on the root and
-                 * root and single-label domains, under the assumption
+                 * single-label domains, under the assumption that those should be resolved via LLMNR or
-                 * that those should be resolved via LLMNR or search
+                 * search path only, and should not be leaked onto the internet. */
-                 * path only, and should not be leaked onto the
+                const char* name = dns_resource_key_name(key);
-                 * internet. */
+
-                return !(dns_name_is_single_label(dns_resource_key_name(key)) ||
+                if (!s->manager->resolve_unicast_single_label &&
-                         dns_name_is_root(dns_resource_key_name(key)));
+                    dns_name_is_single_label(name))
+                        return false;
+
+                return !dns_name_is_root(name);
         }
 
         /* On mDNS and LLMNR, send A and AAAA queries only on the
@@ -1169,7 +1170,7 @@ DnsSearchDomain *dns_scope_get_search_domains(DnsScope *s) {
         return s->manager->search_domains;
 }
 
-bool dns_scope_name_needs_search_domain(DnsScope *s, const char *name) {
+bool dns_scope_name_wants_search_domain(DnsScope *s, const char *name) {
         assert(s);
 
         if (s->protocol != DNS_PROTOCOL_DNS)

src/resolve/resolved-dns-scope.h

@@ -99,7 +99,7 @@ void dns_scope_dump(DnsScope *s, FILE *f);
 
 DnsSearchDomain *dns_scope_get_search_domains(DnsScope *s);
 
-bool dns_scope_name_needs_search_domain(DnsScope *s, const char *name);
+bool dns_scope_name_wants_search_domain(DnsScope *s, const char *name);
 
 bool dns_scope_network_good(DnsScope *s);
 

src/resolve/resolved-gperf.gperf

@@ -28,3 +28,4 @@ Resolve.DNSOverTLS,      config_parse_dns_over_tls_mode,      0,
 Resolve.Cache,                     config_parse_dns_cache_mode,         DNS_CACHE_MODE_YES,  offsetof(Manager, enable_cache)
 Resolve.DNSStubListener,           config_parse_dns_stub_listener_mode, 0,                   offsetof(Manager, dns_stub_listener_mode)
 Resolve.ReadEtcHosts,              config_parse_bool,                   0,                   offsetof(Manager, read_etc_hosts)
+Resolve.ResolveUnicastSingleLabel, config_parse_bool,                   0,                   offsetof(Manager, resolve_unicast_single_label)

src/resolve/resolved-manager.h

@@ -70,9 +70,10 @@ struct Manager {
         LIST_HEAD(DnsSearchDomain, search_domains);
         unsigned n_search_domains;
 
-        bool need_builtin_fallbacks:1;
+        bool need_builtin_fallbacks;
+        bool read_resolv_conf;
+        bool resolve_unicast_single_label;
 
-        bool read_resolv_conf:1;
         struct stat resolv_conf_stat;
 
         DnsTrustAnchor trust_anchor;

src/resolve/resolved.conf.in

@@ -22,3 +22,4 @@
 #Cache=yes
 #DNSStubListener=yes
 #ReadEtcHosts=yes
+#ResolveUnicastSingleLabel=no

test/TEST-21-SYSUSERS/test.sh

@@ -115,9 +115,7 @@ test_run() {
         echo "*** Running test $f"
         prepare_testdir ${f%.input}
         cp $f $TESTDIR/usr/lib/sysusers.d/test.conf
-        systemd-sysusers --root=$TESTDIR 2> /dev/null
+        systemd-sysusers --root=$TESTDIR 2>&1 | tail -n1 > $TESTDIR/tmp/err
-        journalctl --sync
-        journalctl -t systemd-sysusers -o cat | tail -n1 > $TESTDIR/tmp/err
         if ! diff -u $TESTDIR/tmp/err  ${f%.*}.expected-err; then
             echo "**** Unexpected error output for $f"
             cat $TESTDIR/tmp/err

tools/make-autosuspend-rules.py

@@ -1,14 +1,24 @@
 #!/usr/bin/env python3
 # SPDX-License-Identifier: LGPL-2.1+
 
-# Generate autosuspend rules for devices that have been whitelisted (IE tested)
+# Generate autosuspend rules for devices that have been tested to work properly
-# by the Chromium OS team. Please keep this script in sync with:
+# with autosuspend by the Chromium OS team. Based on
 # https://chromium.googlesource.com/chromiumos/platform2/+/master/power_manager/udev/gen_autosuspend_rules.py
 
-import sys
 import chromiumos.gen_autosuspend_rules
 
-if __name__ == '__main__':
+print('# pci:v<00VENDOR>d<00DEVICE> (8 uppercase hexadecimal digits twice)')
-    if len(sys.argv) > 1:
+for entry in chromiumos.gen_autosuspend_rules.PCI_IDS:
-        sys.stdout = open(sys.argv[1], 'w')
+    vendor, device = entry.split(':')
-    chromiumos.gen_autosuspend_rules.main()
+    vendor = int(vendor, 16)
+    device = int(device, 16)
+    print(f'pci:v{vendor:08X}d{device:08X}*')
+
+print('# usb:v<VEND>p<PROD> (4 uppercase hexadecimal digits twice')
+for entry in chromiumos.gen_autosuspend_rules.USB_IDS:
+    vendor, product = entry.split(':')
+    vendor = int(vendor, 16)
+    product = int(product, 16)
+    print(f'usb:v{vendor:04X}p{product:04X}*')
+
+print(' ID_AUTOSUSPEND=1')