[systemd-commits] Makefile.am Makefile-man.am man/kernel-install.xml src/kernel-install
Harald Hoyer
harald at kemper.freedesktop.org
Mon Feb 25 09:58:56 PST 2013
Makefile-man.am | 1
Makefile.am | 3
man/kernel-install.xml | 138 ++++++++++++++++++++++++++++++++++
src/kernel-install/kernel-install | 152 ++++++++++++++++++++++++++++++++++++++
4 files changed, 294 insertions(+)
New commits:
commit 81516adcb71a47837544340f72eb8ee810274119
Author: Harald Hoyer <harald at redhat.com>
Date: Fri Feb 22 17:18:47 2013 +0100
kernel-install: add kernel-install tool
diff --git a/Makefile-man.am b/Makefile-man.am
index e4eb26c..526c05d 100644
--- a/Makefile-man.am
+++ b/Makefile-man.am
@@ -9,6 +9,7 @@ MANPAGES += \
man/journalctl.1 \
man/journald.conf.5 \
man/kernel-command-line.7 \
+ man/kernel-install.8 \
man/locale.conf.5 \
man/localtime.5 \
man/machine-id.5 \
diff --git a/Makefile.am b/Makefile.am
index f0f0ebc..74534cc 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -278,6 +278,9 @@ bin_PROGRAMS = \
systemd-delta \
systemd-analyze
+bin_SCRIPTS = \
+ src/kernel-install/kernel-install
+
rootlibexec_PROGRAMS = \
systemd \
systemd-cgroups-agent \
diff --git a/man/kernel-install.xml b/man/kernel-install.xml
new file mode 100644
index 0000000..06939fa
--- /dev/null
+++ b/man/kernel-install.xml
@@ -0,0 +1,138 @@
+<?xml version='1.0'?> <!--*-nxml-*-->
+<!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 at 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="req">COMMAND</arg> <arg choice="req">KERNEL VERSION</arg> <arg choice="req">KERNEL IMAGE</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>kernel-install 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 directories in
+ which they live. However, files with identical file names 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 /dev/null, disables the executable entirely. Executables must have the
+ extension .install; other extensions are ignored.</para>
+
+ </refsect1>
+
+ <refsect1>
+ <title>Commands</title>
+ <para>The following commands are understood:</para>
+ <variablelist>
+ <varlistentry>
+ <term>add <KERNEL VERSION> <KERNEL IMAGE></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
+ "add <KERNEL VERSION> <filename>/boot/<MACHINE-ID>/<KERNEL VERSION>/</filename>"</para>
+
+ <para>kernel-install copies <KERNEL IMAGE> to
+ <filename>/boot/<MACHINE-ID>/<KERNEL VERSION>/linux</filename>.</para>
+
+ <para>kernel-install also creates a boot loader entry according to the boot loader specification
+ in <filename>/boot/loader/entries/<OS-ID>-<KERNEL VERSION>-<MACHINE-ID>.conf</filename>.
+ 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>remove <KERNEL VERSION> <KERNEL IMAGE></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:
+ "remove <KERNEL VERSION> <filename>/boot/<MACHINE-ID>/<KERNEL VERSION>/</filename>"
+ </para>
+ <para>kernel-install removes the entire directory <filename>/boot/<MACHINE-ID>/<KERNEL VERSION>/</filename>
+ and the file <filename>/boot/loader/entries/<OS-ID>-<KERNEL VERSION>-<MACHINE-ID>.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>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <ulink url="http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec">Boot loader specification</ulink>
+ </para>
+ </refsect1>
+
+</refentry>
diff --git a/src/kernel-install/kernel-install b/src/kernel-install/kernel-install
new file mode 100644
index 0000000..1bbbc17
--- /dev/null
+++ b/src/kernel-install/kernel-install
@@ -0,0 +1,152 @@
+#!/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/>.
+
+export LC_COLLATE=C
+
+COMMAND="$1"
+KERNEL_VERSION="$2"
+KERNEL_IMAGE="$3"
+
+[[ -f /etc/os-release ]] && . /etc/os-release
+if ! [[ $ID ]]; then
+ echo "Can't determine the name of your distribution. Please create /etc/os-release." >&2
+ echo "See http://www.freedesktop.org/software/systemd/man/os-release.html" >&2
+ exit 1
+fi
+
+[[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
+if ! [[ $MACHINE_ID ]]; then
+ echo "Can't determine your machine id. Please create /etc/machine-id!" >&2
+ echo "See http://www.freedesktop.org/software/systemd/man/machine-id.html" >&2
+ exit 1
+fi
+
+if [[ -f /etc/kernel/cmdline ]]; then
+ readarray -t BOOT_OPTIONS < /etc/kernel/cmdline
+fi
+
+if ! [[ "${BOOT_OPTIONS[@]}" ]]; then
+ readarray -t BOOT_OPTIONS < /proc/cmdline
+fi
+
+if ! [[ $BOOT_OPTIONS ]]; then
+ echo "Can't determine the kernel command line parameters." >&2
+ echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
+ exit 1
+fi
+
+usage()
+{
+ {
+ echo "Usage:"
+ echo " $0 add <kernel-version> <kernel-image>"
+ echo " $0 remove <kernel-version> <kernel-image>"
+ } >&2
+}
+
+if ! ( [[ $COMMAND ]] && [[ $KERNEL_VERSION ]] && [[ $KERNEL_IMAGE ]] ); then
+ usage
+ exit 1
+fi
+
+BOOT_DIR="/boot/$MACHINE_ID/$KERNEL_VERSION"
+ret=0
+
+dropindirs_sort()
+{
+ suffix=$1; shift
+ readarray -t files< <(
+ for d in "$@"; do
+ for i in "${d}/"*${suffix}; do
+ [[ -e $i ]] && echo ${i##*/}
+ done
+ done | sort -Vu
+ )
+
+ for f in "${files[@]}"; do
+ for d in "$@"; do
+ if [[ -e "$d/$f" ]]; then
+ echo "$d/$f"
+ continue 2
+ fi
+ done
+ done
+}
+
+readarray -t PLUGINS < <(
+ dropindirs_sort ".install" \
+ "/etc/kernel/install.d" \
+ "/usr/lib/kernel/install.d"
+)
+
+case "$COMMAND" in
+ add)
+ mkdir -p "$BOOT_DIR" || exit 1
+
+ for f in "${PLUGINS[@]}"; do
+ [[ -x $f ]] && "$f" add "$KERNEL_VERSION" "$BOOT_DIR"
+ ((ret+=$?))
+ done
+
+ if ! cp --preserve "$KERNEL_IMAGE" "$BOOT_DIR"/linux; then
+ echo "Can't copy '$KERNEL_IMAGE to '$BOOT_DIR/linux'!" >&2
+ fi
+
+ [[ -d /boot/loader/entries ]] || mkdir -p /boot/loader/entries
+
+ {
+ 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}"/initrd ]] && \
+ echo "initrd $BOOT_DIR/initrd"
+ :
+ } > "/boot/loader/entries/${ID}-${KERNEL_VERSION}-${MACHINE_ID}.conf"
+export LANG=C
+
+ ((ret+=$?))
+
+ if ! [[ -f "/boot/loader/entries/${ID}-${KERNEL_VERSION}-${MACHINE_ID}.conf" ]]; then
+ echo "Could not create '/boot/loader/entries/${ID}-${KERNEL_VERSION}-${MACHINE_ID}.conf'!" >&2
+ fi
+
+ ;;
+
+ remove)
+ for f in "${PLUGINS[@]}"; do
+ [[ -x $f ]] && "$f" remove "$KERNEL_VERSION" "$BOOT_DIR"
+ ((ret+=$?))
+ done
+
+ rm -fr "$BOOT_DIR"
+ rm -f "/boot/loader/entries/${ID}-${KERNEL_VERSION}-${MACHINE_ID}.conf"
+ ;;
+
+ *)
+ usage
+ ret=1;;
+esac
+
+((ret+=$?))
+
+exit $ret
More information about the systemd-commits
mailing list