repart: add basic Varlink support, for now only with a ListCandidateDevices() call

units/meson.build

@@ -651,6 +651,15 @@ units = [
           'conditions' : ['ENABLE_REPART'],
           'symlinks' : ['sysinit.target.wants/', 'initrd-root-fs.target.wants/'],
         },
+        {
+          'file' : 'systemd-repart.socket',
+          'conditions' : ['ENABLE_REPART'],
+          'symlinks' : ['sockets.target.wants/'],
+        },
+        {
+          'file' : 'systemd-repart@.service',
+          'conditions' : ['ENABLE_REPART'],
+        },
         {
           'file' : 'systemd-resolved.service.in',
           'conditions' : ['ENABLE_RESOLVE'],

units/systemd-repart.socket

@@ -0,0 +1,22 @@
+#  SPDX-License-Identifier: LGPL-2.1-or-later
+#
+#  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=Disk Repartitioning Service Socket
+Documentation=man:systemd-repart(8)
+DefaultDependencies=no
+Before=sockets.target
+Conflicts=shutdown.target
+Before=shutdown.target
+
+[Socket]
+ListenStream=/run/systemd/io.systemd.Repart
+FileDescriptorName=varlink
+SocketMode=0600
+Accept=yes

units/systemd-repart@.service

@@ -0,0 +1,20 @@
+#  SPDX-License-Identifier: LGPL-2.1-or-later
+#
+#  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=Disk Repartitioning Service
+Documentation=man:systemd-repart.service(8)
+DefaultDependencies=no
+Wants=modprobe@loop.service modprobe@dm_mod.service
+After=modprobe@loop.service modprobe@dm_mod.service systemd-tpm2-setup-early.service
+Conflicts=shutdown.target
+Before=shutdown.target
+
+[Service]
+ExecStart=systemd-repart