From f2f1f2472c5efc541bd53f51289ad58a86fa2d41 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Sat, 20 May 2017 17:35:06 -0400
Subject: ./tools/notsd-move

---
 src/grp-boot/kernel-install/50-depmod.install      |   8 +
 src/grp-boot/kernel-install/90-loaderentry.install |  89 ++++++++++
 src/grp-boot/kernel-install/GNUmakefile            |   1 +
 src/grp-boot/kernel-install/Makefile               |  33 ++++
 src/grp-boot/kernel-install/kernel-install         | 159 +++++++++++++++++
 .../kernel-install/kernel-install.completion.bash  |  50 ++++++
 .../kernel-install/kernel-install.completion.zsh   |  26 +++
 src/grp-boot/kernel-install/kernel-install.xml     | 195 +++++++++++++++++++++
 8 files changed, 561 insertions(+)
 create mode 100644 src/grp-boot/kernel-install/50-depmod.install
 create mode 100644 src/grp-boot/kernel-install/90-loaderentry.install
 create mode 120000 src/grp-boot/kernel-install/GNUmakefile
 create mode 100644 src/grp-boot/kernel-install/Makefile
 create mode 100644 src/grp-boot/kernel-install/kernel-install
 create mode 100644 src/grp-boot/kernel-install/kernel-install.completion.bash
 create mode 100644 src/grp-boot/kernel-install/kernel-install.completion.zsh
 create mode 100644 src/grp-boot/kernel-install/kernel-install.xml

(limited to 'src/grp-boot/kernel-install')

diff --git a/src/grp-boot/kernel-install/50-depmod.install b/src/grp-boot/kernel-install/50-depmod.install
new file mode 100644
index 0000000000..68c24bed7a
--- /dev/null
+++ b/src/grp-boot/kernel-install/50-depmod.install
@@ -0,0 +1,8 @@
+#!/bin/bash
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+[[ $1 == "add" ]] || exit 0
+[[ $2 ]] || exit 1
+
+exec depmod -a "$2"
diff --git a/src/grp-boot/kernel-install/90-loaderentry.install b/src/grp-boot/kernel-install/90-loaderentry.install
new file mode 100644
index 0000000000..af9f0f9ccd
--- /dev/null
+++ b/src/grp-boot/kernel-install/90-loaderentry.install
@@ -0,0 +1,89 @@
+#!/bin/bash
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+COMMAND="$1"
+KERNEL_VERSION="$2"
+BOOT_DIR_ABS="$3"
+KERNEL_IMAGE="$4"
+
+if [[ -f /etc/machine-id ]]; then
+    read MACHINE_ID < /etc/machine-id
+fi
+
+if ! [[ $MACHINE_ID ]]; then
+    exit 1
+fi
+
+BOOT_DIR="/$MACHINE_ID/$KERNEL_VERSION"
+BOOT_ROOT=${BOOT_DIR_ABS%$BOOT_DIR}
+LOADER_ENTRY="$BOOT_ROOT/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf"
+
+if [[ $COMMAND == remove ]]; then
+    exec rm -f "$LOADER_ENTRY"
+fi
+
+if ! [[ $COMMAND == add ]]; then
+    exit 1
+fi
+
+if ! [[ $KERNEL_IMAGE ]]; then
+    exit 1
+fi
+
+if [[ -f /etc/os-release ]]; then
+    . /etc/os-release
+elif [[ -f /usr/lib/os-release ]]; then
+    . /usr/lib/os-release
+fi
+
+if ! [[ $PRETTY_NAME ]]; then
+    PRETTY_NAME="GNU/Linux $KERNEL_VERSION"
+fi
+
+declare -a BOOT_OPTIONS
+
+if [[ -f /etc/kernel/cmdline ]]; then
+    read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline
+fi
+
+if ! [[ ${BOOT_OPTIONS[*]} ]]; then
+    read -r -d '' -a line < /proc/cmdline
+    for i in "${line[@]}"; do
+        [[ "${i#initrd=*}" != "$i" ]] && continue
+        BOOT_OPTIONS+=("$i")
+    done
+fi
+
+if ! [[ ${BOOT_OPTIONS[*]} ]]; then
+    echo "Could not determine the kernel command line parameters." >&2
+    echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
+    exit 1
+fi
+
+cp "$KERNEL_IMAGE" "$BOOT_DIR_ABS/linux" &&
+   chown root:root "$BOOT_DIR_ABS/linux" &&
+   chmod 0644 "$BOOT_DIR_ABS/linux" || {
+    echo "Could not copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/linux'." >&2
+    exit 1
+}
+
+mkdir -p "${LOADER_ENTRY%/*}" || {
+    echo "Could not create loader entry directory '${LOADER_ENTRY%/*}'." >&2
+    exit 1
+}
+
+{
+    echo "title      $PRETTY_NAME"
+    echo "version    $KERNEL_VERSION"
+    echo "machine-id $MACHINE_ID"
+    echo "options    ${BOOT_OPTIONS[*]}"
+    echo "linux      $BOOT_DIR/linux"
+    [[ -f $BOOT_DIR_ABS/initrd ]] && \
+        echo "initrd     $BOOT_DIR/initrd"
+    :
+} > "$LOADER_ENTRY" || {
+    echo "Could not create loader entry '$LOADER_ENTRY'." >&2
+    exit 1
+}
+exit 0
diff --git a/src/grp-boot/kernel-install/GNUmakefile b/src/grp-boot/kernel-install/GNUmakefile
new file mode 120000
index 0000000000..95e5924740
--- /dev/null
+++ b/src/grp-boot/kernel-install/GNUmakefile
@@ -0,0 +1 @@
+../../../GNUmakefile
\ No newline at end of file
diff --git a/src/grp-boot/kernel-install/Makefile b/src/grp-boot/kernel-install/Makefile
new file mode 100644
index 0000000000..6a937f516c
--- /dev/null
+++ b/src/grp-boot/kernel-install/Makefile
@@ -0,0 +1,33 @@
+#  -*- Mode: makefile; indent-tabs-mode: t -*-
+#
+#  This file is part of systemd.
+#
+#  Copyright 2010-2012 Lennart Poettering
+#  Copyright 2010-2012 Kay Sievers
+#  Copyright 2013 Zbigniew Jędrzejewski-Szmek
+#  Copyright 2013 David Strauss
+#  Copyright 2016 Luke Shumaker
+#
+#  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 $(dir $(lastword $(MAKEFILE_LIST)))/../../../config.mk
+include $(topsrcdir)/build-aux/Makefile.head.mk
+
+dist_bin_SCRIPTS = \
+	src/kernel-install/kernel-install
+
+dist_kernelinstall_SCRIPTS = \
+	src/kernel-install/50-depmod.install \
+	src/kernel-install/90-loaderentry.install
+
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/grp-boot/kernel-install/kernel-install b/src/grp-boot/kernel-install/kernel-install
new file mode 100644
index 0000000000..0c0ee718ac
--- /dev/null
+++ b/src/grp-boot/kernel-install/kernel-install
@@ -0,0 +1,159 @@
+#!/bin/bash
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+#
+# This file is part of systemd.
+#
+# Copyright 2013 Harald Hoyer
+#
+# 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
+# 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/>.
+
+SKIP_REMAINING=77
+
+usage()
+{
+    echo "Usage:"
+    echo "        $0 add KERNEL-VERSION KERNEL-IMAGE"
+    echo "        $0 remove KERNEL-VERSION"
+}
+
+dropindirs_sort()
+{
+    local suffix=$1; shift
+    local -a files
+    local f d i
+
+    readarray -t files < <(
+        for d in "$@"; do
+            for i in "$d/"*"$suffix"; do
+                if [[ -e "$i" ]]; then
+                    echo "${i##*/}"
+                fi
+            done
+        done | sort -Vu
+    )
+
+    for f in "${files[@]}"; do
+        for d in "$@"; do
+            if [[ -e "$d/$f" ]]; then
+                echo "$d/$f"
+                continue 2
+            fi
+        done
+    done
+}
+
+export LC_COLLATE=C
+
+for i in "$@"; do
+    if [ "$i" == "--help" -o "$i" == "-h" ]; then
+        usage
+        exit 0
+    fi
+done
+
+if [[ "${0##*/}" == 'installkernel' ]]; then
+    COMMAND='add'
+else
+    COMMAND="$1"
+    shift
+fi
+
+KERNEL_VERSION="$1"
+KERNEL_IMAGE="$2"
+
+if [[ -f /etc/machine-id ]]; then
+    read MACHINE_ID < /etc/machine-id
+fi
+
+if ! [[ $MACHINE_ID ]]; then
+    echo "Could not determine your machine ID from /etc/machine-id." >&2
+    echo "Please run 'systemd-machine-id-setup' as root. See man:machine-id(5)" >&2
+    exit 1
+fi
+
+if [[ ! $COMMAND ]] || [[ ! $KERNEL_VERSION ]]; then
+    echo "Not enough arguments" >&2
+    exit 1
+fi
+
+if [[ -d /efi/loader/entries ]] || [[ -d /efi/$MACHINE_ID ]]; then
+    BOOT_DIR_ABS="/efi/$MACHINE_ID/$KERNEL_VERSION"
+elif [[ -d /boot/loader/entries ]] || [[ -d /boot/$MACHINE_ID ]]; then
+    BOOT_DIR_ABS="/boot/$MACHINE_ID/$KERNEL_VERSION"
+elif [[ -d /boot/efi/loader/entries ]] || [[ -d /boot/efi/$MACHINE_ID ]]; then
+    BOOT_DIR_ABS="/boot/efi/$MACHINE_ID/$KERNEL_VERSION"
+elif mountpoint -q /efi; then
+    BOOT_DIR_ABS="/efi/$MACHINE_ID/$KERNEL_VERSION"
+elif mountpoint -q /boot/efi; then
+    BOOT_DIR_ABS="/boot/efi/$MACHINE_ID/$KERNEL_VERSION"
+else
+    BOOT_DIR_ABS="/boot/$MACHINE_ID/$KERNEL_VERSION"
+fi
+
+ret=0
+
+readarray -t PLUGINS < <(
+    dropindirs_sort ".install" \
+        "/etc/kernel/install.d" \
+        "/usr/lib/kernel/install.d"
+)
+
+case $COMMAND in
+    add)
+        if [[ ! "$KERNEL_IMAGE" ]]; then
+            echo "Command 'add' requires an argument" >&2
+            exit 1
+        fi
+
+        mkdir -p "$BOOT_DIR_ABS" || {
+            echo "Could not create boot directory '$BOOT_DIR_ABS'." >&2
+            exit 1
+        }
+
+        for f in "${PLUGINS[@]}"; do
+            if [[ -x $f ]]; then
+                "$f" add "$KERNEL_VERSION" "$BOOT_DIR_ABS" "$KERNEL_IMAGE"
+                x=$?
+                if [[ $x == $SKIP_REMAINING ]]; then
+                    return 0
+                fi
+                ((ret+=$x))
+            fi
+        done
+        ;;
+
+    remove)
+        for f in "${PLUGINS[@]}"; do
+            if [[ -x $f ]]; then
+                "$f" remove "$KERNEL_VERSION" "$BOOT_DIR_ABS"
+                x=$?
+                if [[ $x == $SKIP_REMAINING ]]; then
+                    return 0
+                fi
+                ((ret+=$x))
+            fi
+        done
+
+        rm -rf "$BOOT_DIR_ABS"
+        ((ret+=$?))
+        ;;
+
+    *)
+        echo "Unknown command '$COMMAND'" >&2
+        exit 1
+        ;;
+esac
+
+exit $ret
diff --git a/src/grp-boot/kernel-install/kernel-install.completion.bash b/src/grp-boot/kernel-install/kernel-install.completion.bash
new file mode 100644
index 0000000000..7cd2494cf7
--- /dev/null
+++ b/src/grp-boot/kernel-install/kernel-install.completion.bash
@@ -0,0 +1,50 @@
+# kernel-install(8) completion                                   -*- shell-script -*-
+#
+# This file is part of systemd.
+#
+# Copyright 2013 Kay Sievers
+# Copyright 2013 Harald Hoyer
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# systemd is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with systemd; If not, see <http://www.gnu.org/licenses/>.
+
+_kernel_install() {
+        local comps
+        local MACHINE_ID
+        local cur=${COMP_WORDS[COMP_CWORD]}
+
+        case $COMP_CWORD in
+            1)
+                comps="add remove"
+                ;;
+            2)
+                comps=$(cd /lib/modules; echo [0-9]*)
+                if [[ ${COMP_WORDS[1]} == "remove" ]] && [[ -f /etc/machine-id ]]; then
+                    read MACHINE_ID < /etc/machine-id
+                    if [[ $MACHINE_ID ]] && ( [[ -d /boot/$MACHINE_ID ]] || [[ -L /boot/$MACHINE_ID ]] ); then
+                        comps=$(cd "/boot/$MACHINE_ID"; echo [0-9]*)
+                    fi
+                fi
+                ;;
+            3)
+                [[ "$cur" ]] || cur=/boot/vmlinuz-${COMP_WORDS[2]}
+                comps=$(compgen -f -- "$cur")
+                compopt -o filenames
+                ;;
+        esac
+
+        COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
+        return 0
+}
+
+complete -F _kernel_install kernel-install
diff --git a/src/grp-boot/kernel-install/kernel-install.completion.zsh b/src/grp-boot/kernel-install/kernel-install.completion.zsh
new file mode 100644
index 0000000000..4fdd3a4ae7
--- /dev/null
+++ b/src/grp-boot/kernel-install/kernel-install.completion.zsh
@@ -0,0 +1,26 @@
+#compdef kernel-install
+
+_images(){
+    if [[ "$words[2]" == "remove" ]]; then
+        _message 'No more options'
+    else
+        _path_files -W /boot/ -P /boot/ -g "vmlinuz-*"
+    fi
+}
+
+_kernels(){
+    read _MACHINE_ID < /etc/machine-id
+    _kernel=( /lib/modules/[0-9]* )
+    if [[ "$cmd" == "remove" && -n "$_MACHINE_ID" ]]; then
+        _kernel=( "/boot/$_MACHINE_ID"/[0-9]* )
+    fi
+    _kernel=( ${_kernel##*/} )
+    _describe "installed kernels" _kernel
+}
+
+_arguments \
+    '1::add or remove:(add remove)' \
+    '2::kernel versions:_kernels' \
+    '3::kernel images:_images'
+
+#vim: set ft=zsh sw=4 ts=4 et
diff --git a/src/grp-boot/kernel-install/kernel-install.xml b/src/grp-boot/kernel-install/kernel-install.xml
new file mode 100644
index 0000000000..32e6169f63
--- /dev/null
+++ b/src/grp-boot/kernel-install/kernel-install.xml
@@ -0,0 +1,195 @@
+<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
+<!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 2013 Harald Hoyer
+
+  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="kernel-install">
+
+  <refentryinfo>
+    <title>kernel-install</title>
+    <productname>systemd</productname>
+
+    <authorgroup>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Harald</firstname>
+        <surname>Hoyer</surname>
+        <email>harald@redhat.com</email>
+      </author>
+    </authorgroup>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>kernel-install</refentrytitle>
+    <manvolnum>8</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>kernel-install</refname>
+    <refpurpose>Add and remove kernel and initramfs images to and from /boot</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <cmdsynopsis>
+      <command>kernel-install</command>
+      <arg choice="plain">COMMAND</arg>
+      <arg choice="plain"><replaceable>KERNEL-VERSION</replaceable></arg>
+      <arg choice="opt"><replaceable>KERNEL-IMAGE</replaceable></arg>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+    <para>
+      <command>kernel-install</command> is used to install and remove kernel and
+      initramfs images to and from <filename>/boot</filename>.
+    </para>
+
+    <para><command>kernel-install</command> will execute the files
+    located in the directory <filename>/usr/lib/kernel/install.d/</filename>
+    and the local administration directory <filename>/etc/kernel/install.d/</filename>.
+    All files are collectively sorted and executed in lexical order, regardless of the directory in
+    which they live. However, files with identical filenames replace each other.
+    Files in <filename>/etc/kernel/install.d/</filename> take precedence over files with the same name
+    in <filename>/usr/lib/kernel/install.d/</filename>. This can be used to override a system-supplied
+    executables with a local file if needed; a symbolic link in <filename>/etc/kernel/install.d/</filename>
+    with the same name as an executable in <filename>/usr/lib/kernel/install.d/</filename>,
+    pointing to <filename>/dev/null</filename>, disables the executable entirely. Executables must have the
+    extension <literal>.install</literal>; other extensions are ignored.</para>
+
+    <para>An executable should return <constant>0</constant> on success. It may also
+    return <constant>77</constant> to cause the whole operation to terminate
+    (executables later in lexical order will be skipped).</para>
+  </refsect1>
+
+  <refsect1>
+    <title>Commands</title>
+    <para>The following commands are understood:</para>
+    <variablelist>
+      <varlistentry>
+        <term><command>add <replaceable>KERNEL-VERSION</replaceable> <replaceable>KERNEL-IMAGE</replaceable></command></term>
+        <listitem>
+          <para><command>kernel-install</command> creates the directory
+          <filename>/boot/<replaceable>MACHINE-ID</replaceable>/<replaceable>KERNEL-VERSION</replaceable>/</filename>
+          and calls every executable
+          <filename>/usr/lib/kernel/install.d/*.install</filename> and
+          <filename>/etc/kernel/install.d/*.install</filename> with
+          the arguments
+          <programlisting>add <replaceable>KERNEL-VERSION</replaceable> <filename>/boot/<replaceable>MACHINE-ID</replaceable>/<replaceable>KERNEL-VERSION</replaceable>/</filename></programlisting>
+          </para>
+
+          <para>The kernel-install plugin <filename>50-depmod.install</filename> runs depmod for the <replaceable>KERNEL-VERSION</replaceable>.</para>
+
+          <para>The kernel-install plugin
+          <filename>90-loaderentry.install</filename> copies
+          <replaceable>KERNEL-IMAGE</replaceable> to
+          <filename>/boot/<replaceable>MACHINE-ID</replaceable>/<replaceable>KERNEL-VERSION</replaceable>/linux</filename>.
+          It also creates a boot loader entry according to the boot
+          loader specification in
+          <filename>/boot/loader/entries/<replaceable>MACHINE-ID</replaceable>-<replaceable>KERNEL-VERSION</replaceable>.conf</filename>.
+          The title of the entry is the
+          <replaceable>PRETTY_NAME</replaceable> parameter specified
+          in <filename>/etc/os-release</filename> or
+          <filename>/usr/lib/os-release</filename> (if the former is
+          missing), or "GNU/Linux
+          <replaceable>KERNEL-VERSION</replaceable>", if unset.  If
+          the file <filename>initrd</filename> is found next to the
+          <filename>linux</filename> file, the initrd will be added to
+          the configuration.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><command>remove <replaceable>KERNEL-VERSION</replaceable></command></term>
+        <listitem>
+          <para>Calls every executable <filename>/usr/lib/kernel/install.d/*.install</filename>
+          and <filename>/etc/kernel/install.d/*.install</filename> with the arguments
+          <programlisting>remove <replaceable>KERNEL-VERSION</replaceable> <filename>/boot/<replaceable>MACHINE-ID</replaceable>/<replaceable>KERNEL-VERSION</replaceable>/</filename></programlisting>
+          </para>
+
+          <para><command>kernel-install</command> removes the entire directory
+          <filename>/boot/<replaceable>MACHINE-ID</replaceable>/<replaceable>KERNEL-VERSION</replaceable>/</filename> afterwards.</para>
+
+          <para>The kernel-install plugin <filename>90-loaderentry.install</filename> removes the file
+          <filename>/boot/loader/entries/<replaceable>MACHINE-ID</replaceable>-<replaceable>KERNEL-VERSION</replaceable>.conf</filename>.</para>
+        </listitem>
+      </varlistentry>
+
+    </variablelist>
+
+  </refsect1>
+
+  <refsect1>
+    <title>Exit status</title>
+    <para>If every executable returns with 0, 0 is returned, a non-zero failure code otherwise.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>Files</title>
+    <variablelist>
+      <varlistentry>
+        <term>
+          <filename>/usr/lib/kernel/install.d/*.install</filename>
+          <filename>/etc/kernel/install.d/*.install</filename>
+        </term>
+          <listitem>
+            <para>Drop-in files which are executed by kernel-install.</para>
+          </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>
+          <filename>/etc/kernel/cmdline</filename>
+          <filename>/proc/cmdline</filename>
+        </term>
+          <listitem>
+            <para>The content of the file <filename>/etc/kernel/cmdline</filename> specifies the kernel command line to use.
+            If that file does not exist, <filename>/proc/cmdline</filename> is used.</para>
+          </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>
+          <filename>/etc/machine-id</filename>
+        </term>
+          <listitem>
+            <para>The content of the file specifies the machine identification <replaceable>MACHINE-ID</replaceable>.</para>
+          </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term>
+          <filename>/etc/os-release</filename>
+          <filename>/usr/lib/os-release</filename>
+        </term>
+          <listitem>
+            <para>The content of the file specifies the operating system title <replaceable>PRETTY_NAME</replaceable>.</para>
+          </listitem>
+      </varlistentry>
+    </variablelist>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para>
+      <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <ulink url="http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec">Boot loader specification</ulink>
+    </para>
+  </refsect1>
+
+</refentry>
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