report: add simple metrics provider that just reads files

units/meson.build

@@ -731,6 +731,8 @@ units = [
         },
         { 'file' : 'systemd-report-cgroup.socket' },
         { 'file' : 'systemd-report-cgroup@.service.in' },
+        { 'file' : 'systemd-report-files.socket' },
+        { 'file' : 'systemd-report-files@.service.in' },
         {
           'file' : 'systemd-report-sign-plain.socket',
           'conditions' : ['HAVE_OPENSSL'],

units/systemd-report-files.socket

@@ -0,0 +1,26 @@
+# 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=Report Files Metrics Socket
+Documentation=man:systemd-report-files@.service(8)
+DefaultDependencies=no
+Before=sockets.target shutdown.target
+Conflicts=shutdown.target
+
+[Socket]
+ListenStream=/run/systemd/report/io.systemd.Files
+FileDescriptorName=varlink
+SocketMode=0666
+Accept=yes
+MaxConnectionsPerSource=16
+RemoveOnStop=yes
+
+[Install]
+WantedBy=sockets.target

units/systemd-report-files@.service.in

@@ -0,0 +1,18 @@
+# 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=Report Files Metrics
+Documentation=man:systemd-report-files@.service(8)
+DefaultDependencies=no
+Conflicts=shutdown.target
+Before=shutdown.target
+
+[Service]
+ExecStart={{LIBEXECDIR}}/systemd-report-files