adding a new package called syslinux

7 files changed, 634 insertions, 0 deletions

diff --git a/libre/syslinux/PKGBUILD b/libre/syslinux/PKGBUILD
new file mode 100644
index 000000000..59986411e
--- /dev/null
+++ b/libre/syslinux/PKGBUILD
@@ -0,0 +1,61 @@
+# $Id$
+# Maintainer: Thomas Bächler <thomas@archlinux.org>
+# Maintainer: Tobias Powalowski <tpowa@archlinux.org>
+# Maintainer (Parabola): André Silva <andre.paulista@adinet.com.uy>
+
+pkgname=syslinux
+pkgver=4.05
+pkgrel=4.1
+arch=('i686' 'x86_64')
+pkgdesc="Collection of boot loaders that boot from FAT, ext2/3/4 and btrfs filesystems, from CDs and via PXE (Parabola rebranded)"
+url="http://syslinux.zytor.com/"
+license=('GPL2')
+depends=('perl' 'glibc')
+optdepends=('perl-passwd-md5:  For md5pass'
+            'perl-digest-sha1: For sha1pass'
+            'mtools:           For mkdiskimage and syslinux support'
+           )
+makedepends=('nasm')
+backup=('boot/syslinux/syslinux.cfg'
+        'boot/syslinux/splash.png')
+install=syslinux.install
+source=(http://www.kernel.org/pub/linux/utils/boot/syslinux/$pkgname-${pkgver}.tar.bz2
+        syslinux-dont-build-dos-windows-targets.patch
+        syslinux.cfg
+        syslinux-install_update
+        splash.png
+        fix-undefined-type-umode_t.patch)
+md5sums=('82299242418385da1274c9479a778cb2'
+         '1528c376e43f0eaccaa80d8ad1bc13b4'
+         'b43a22fc9c897167b7f52450bae1ef95'
+         '680750f73dc2e587ac567d057d485813'
+         '0035b6cac6756a384b861eda8d33e4f7'
+         '75750bd5b0f5bc51920164a01a6f5f2e')
+
+build() {
+  # Do not try to build syslinux with our default LDFLAGS, it will fail
+  unset LDFLAGS
+  cd "$srcdir"/$pkgname-${pkgver}
+  # Do not try to build the Windows or DOS installers
+  patch -p1 -i "$srcdir"/syslinux-dont-build-dos-windows-targets.patch
+  # Fix unknown type name 'umode_t' error
+  patch -p1 -i "$srcdir"/fix-undefined-type-umode_t.patch
+  # Fix FHS manpage path
+  sed 's|/usr/man|/usr/share/man|g' -i mk/syslinux.mk
+  make
+}
+
+package() {
+  cd "$srcdir"/$pkgname-${pkgver}
+  make INSTALLROOT="$pkgdir" AUXDIR=/usr/lib/syslinux install
+
+  # Install the default configuration
+  install -D -m644 "$srcdir"/syslinux.cfg "$pkgdir"/boot/syslinux/syslinux.cfg
+  # Install Parabola splash
+  install -D -m644 "$srcdir"/splash.png "$pkgdir"/boot/syslinux/splash.png
+  # Install the installation and update script
+  # This script is maintained at git://gist.github.com/772138.git
+  install -D -m755 "$srcdir"/syslinux-install_update "$pkgdir"/usr/sbin/syslinux-install_update
+  # move extlinux binary to /usr/sbin
+  mv "$pkgdir"/sbin/extlinux "$pkgdir"/usr/sbin/extlinux
+}
diff --git a/libre/syslinux/fix-undefined-type-umode_t.patch b/libre/syslinux/fix-undefined-type-umode_t.patch
new file mode 100644
index 000000000..cfec1ad90
--- /dev/null
+++ b/libre/syslinux/fix-undefined-type-umode_t.patch
@@ -0,0 +1,11 @@
+--- syslinux-4.05.orig/libinstaller/linuxioctl.h	2011-12-09 16:28:17.000000000 -0200
++++ syslinux-4.05/libinstaller/linuxioctl.h	2012-05-20 22:05:50.521380781 -0300
+@@ -19,7 +19,7 @@
+ 
+ #undef SECTOR_SIZE		/* Defined in msdos_fs.h for no good reason */
+ #undef SECTOR_BITS
+-#include <linux/ext2_fs.h>	/* EXT2_IOC_* */
++#include <ext2fs/ext2_fs.h>	/* EXT2_IOC_* */
+ 
+ #ifndef FAT_IOCTL_GET_ATTRIBUTES
+ # define FAT_IOCTL_GET_ATTRIBUTES	_IOR('r', 0x10, __u32)
diff --git a/libre/syslinux/splash.png b/libre/syslinux/splash.png
new file mode 100644
index 000000000..43d4692ab
--- /dev/null
+++ b/libre/syslinux/splash.png
diff --git a/libre/syslinux/syslinux-dont-build-dos-windows-targets.patch b/libre/syslinux/syslinux-dont-build-dos-windows-targets.patch
new file mode 100644
index 000000000..2b86ab828
--- /dev/null
+++ b/libre/syslinux/syslinux-dont-build-dos-windows-targets.patch
@@ -0,0 +1,12 @@
+diff -Nur syslinux-4.02.orig//Makefile syslinux-4.02//Makefile
+--- syslinux-4.02.orig//Makefile	2010-07-21 21:33:13.000000000 +0200
++++ syslinux-4.02//Makefile	2010-07-22 11:14:03.325522937 +0200
+@@ -54,7 +54,7 @@
+ # files that depend only on the B phase, but may have to be regenerated
+ # for "make installer".
+ BSUBDIRS = codepage com32 lzo core memdisk modules mbr memdump gpxe sample \
+-	   diag libinstaller dos win32 win64 dosutil
++	   libinstaller
+ ITARGET  =
+ IOBJECTS = $(ITARGET) \
+ 	utils/gethostip utils/isohybrid utils/mkdiskimage \
diff --git a/libre/syslinux/syslinux-install_update b/libre/syslinux/syslinux-install_update
new file mode 100644
index 000000000..cd1baa572
--- /dev/null
+++ b/libre/syslinux/syslinux-install_update
@@ -0,0 +1,463 @@
+#!/bin/bash
+#
+# Sylinux Installer / Updater Scripts
+# Copyright (C) 2011  Matthew Gyurgyik <pyther@pyther.net>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program 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 General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+#-----------------
+# Exit Codes:
+#   1 - get_boot_device or other function failed
+#   2 - install/update failed
+#   3 - set_active failed
+#   4 - install_mbr failed
+#
+shopt -s nullglob
+
+libpath="/usr/lib/syslinux"
+bootpath="/boot/syslinux"
+extlinux="/usr/sbin/extlinux"
+
+autoupdate_file=/boot/syslinux/SYSLINUX_AUTOUPDATE
+com32_files=(menu.c32 vesamenu.c32 chain.c32 hdt.c32 reboot.c32 poweroff.com)
+pciids_file=/usr/share/hwdata/pci.ids
+
+## Helper functions ##
+# Taken from libui-sh
+# $1 needle
+# $2 set (array) haystack
+check_is_in() {
+    local needle="$1" element
+    shift
+    for element; do
+        [[ $element = $needle ]] && return 0
+    done
+    return 1
+}
+
+# return true when blockdevice is an md raid, otherwise return a unset value
+# get all devices that are part of raid device $1
+device_is_raid() {
+    [[ $1 && -f /proc/mdstat ]] || return 1
+    local devmajor=$(stat -c %t "$1")
+    (( devmajor == 9 ))
+}
+
+mdraid_all_slaves() {
+    local slave slaves
+    for slave in /sys/class/block/${1##*/}/slaves/*; do
+        source "$slave/uevent"
+        slaves="$slaves/dev/$DEVNAME "
+        unset DEVNAME
+    done
+    echo $slaves
+}
+
+# Check /sys/block to see if device is partitioned
+# If we have a partitioned block device (sda1) /sys/block/sda1/dev will not exist
+# However, if we have an unpartitioned block device (sda) /sys/block/sda/dev will exist
+dev_is_part() {
+    # $1 - blockdevice
+    local dev=$1
+
+    # If block device uevent file should be found
+    # If a partition is passed in path shouldn't exist
+    if [[ $dev = *cciss* ]]; then
+        [[ -f /sys/block/cciss\!${dev##*/}/dev ]] && return 1
+    elif [[ $dev = *ida* ]]; then
+        [[ -f /sys/block/ida\!${dev##*/}/dev ]] && return 1
+    else
+        [[ -f /sys/block/${dev##*/}/dev ]] && return 1
+    fi
+
+    return 0
+}
+
+# If EFI PART is present in the first 8 bytes then it must be a GPT disk
+device_is_gpt() {
+    local partsig=$(dd if="$1" skip=64 bs=8 count=1 2>/dev/null)
+    [[ $partsig = "EFI PART" ]]
+}
+
+clear_gpt_attr2() {
+    # $1 - Block Device, no partitions
+    local disk=$1
+
+    # Special Exception for cciss controllers
+    if [[ $disk = *cciss* ]]; then
+        for part in /dev/cciss/${disk##*/}*p*; do
+            local partnum="${part##*[[:alpha:]]}"
+            sgdisk "$disk" --attributes="$partnum":clear:2 &>/dev/null
+        done
+    # Smart 2 Controllers
+    elif [[ $disk = *ida* ]]; then
+        for part in /dev/ida/${disk##*/}*p*; do
+            local partnum="${part##*[[:alpha:]]}"
+            sgdisk "$disk" --attributes="$partnum":clear:2 &>/dev/null
+        done
+    else
+        for part in  /sys/block/${disk##*/}/${disk##*/}*; do
+            local partnum="${part##*[[:alpha:]]}"
+            sgdisk "$disk" --attributes="$partnum":clear:2 &>/dev/null
+        done
+    fi
+    return 0
+}
+
+usage() {
+cat << EOF
+usage: $0 options
+
+This script will install or upgrade Syslinux
+
+OPTIONS:
+  -h    Show this message
+  -i    Install Syslinux
+  -u    Update Syslinux
+  -a    Set Boot flag on boot partiton
+  -m    Install Syslinux MBR
+  -s    Updates Syslinux if /boot/syslinux/SYSLINUX_AUTOUPDATE exists
+
+ Arguments Required:
+  -c    Chroot install (ex: -c /mnt)
+
+Example Usage: syslinux-install_update.sh -i -a -m (install, set boot flag, install mbr)
+               syslinux-install_update.sh -u (update)
+EOF
+}
+
+# Trys to find the partition that /boot resides on
+# This will either be on /boot or / (root)
+getBoot() {
+    if [[ ! -d "$bootpath" ]]; then
+        echo "Could not find $bootpath"
+        echo "Is boot mounted? Is Syslinux installed?"
+        exit 1
+    fi
+
+    syslinux_fs=(ext2 ext3 ext4 btrfs vfat)
+
+    # Use DATA from findmnt see rc.sysint for more info
+    if [[ -f /proc/self/mountinfo ]]; then
+        read rootdev rootfs < <(findmnt -run -t noautofs -o SOURCE,FSTYPE "$CHROOT/")
+        read bootdev bootfs < <(findmnt -run -t noautofs -o SOURCE,FSTYPE "$CHROOT/boot")
+    else
+        echo "Could not find /proc/self/mountinfo"
+        echo "Are you running a kernel greater than 2.6.24?"
+        exit 1
+    fi
+
+    if [[ $bootfs ]]; then
+        if ! check_is_in "$bootfs" "${syslinux_fs[@]}"; then
+            echo "/boot file system is not supported by Syslinux"
+            exit 1
+        fi
+        boot="boot"
+        bootpart="$bootdev"
+    elif [[ $rootfs ]]; then
+        if ! check_is_in "$rootfs" "${syslinux_fs[@]}"; then
+            echo "/ (root) file system is not supported by Syslinux"
+            exit 1
+        fi
+        boot="root"
+        bootpart="$rootdev"
+    else
+        echo "Could not find filesystem on / (root) or /boot."
+        exit 1
+    fi
+}
+
+# We store the partition table type either gpt or mbr in var ptb
+# In rare cases a user could have one raid disk using mbr and another using gpt
+# In such cases we accept that the output may be incomplete
+
+# Calls get_ptb() for $bootpart or for all device in RAID
+declare -A bootdevs
+get_boot_devices() {
+    if device_is_raid "$bootpart"; then
+        slaves=$(mdraid_all_slaves "$bootpart")
+
+        for slave in ${slaves[@]}; do
+            local disk="${slave%%[[:digit:]]*}"
+            device_is_gpt "$disk" && local ptb="GPT" || local ptb="MBR"
+            bootdevs[$slave]="$ptb"
+        done
+    else
+        local disk="${bootpart%%[[:digit:]]*}"
+        device_is_gpt "$disk" && local ptb="GPT" || local ptb="MBR"
+        bootdevs[$bootpart]="$ptb"
+    fi
+}
+
+# Function Assumes the boot partition should be marked as active
+# All other partitions should not have the boot flag set
+set_active() {
+    # If any bootdev is a block device without partitions bail
+    # we want to set the boot flag on partitioned disk
+    for dev in "${!bootdevs[@]}"; do
+        dev_is_part $dev || { echo "$dev - is a block device. Aborting set_active!"; return 1; }
+    done
+
+    # Clear BIOS Bootable Legacy Attribute for GPT drives
+    # In rare cases where a RAID device has slaves on the same block device
+    # Attribute 2 will be cleared for each partition multiple times
+    for dev in "${!bootdevs[@]}"; do
+        local ptb="${bootdevs[$dev]}"
+        if [[ "$ptb" = GPT ]]; then
+            local disk="${dev%%[[:digit:]]*}" #ex: /dev/sda
+            clear_gpt_attr2 "$disk"
+        fi
+    done
+
+    # Set the boot flag on bootdevs (generated from get_boot_devices)
+    for part in "${!bootdevs[@]}"; do
+        local ptb="${bootdevs[$part]}"
+        local partnum="${part##*[[:alpha:]]}"
+        case "$part" in
+            *[[:digit:]]p[[:digit:]]*)
+                local disk="${part%%p$partnum}" # get everything before p1
+                ;;
+            *)
+                local disk="${part%%[[:digit:]]*}"
+                ;;
+        esac
+
+        if [[ "$ptb" = MBR ]]; then
+            if sfdisk "$disk" -A "$partnum" &>/dev/null; then
+                echo "Boot Flag Set - $part"
+            else
+                echo "FAILED to Set the boot flag on $part"
+                exit 3
+            fi
+        elif [[ "$ptb" = GPT ]]; then
+            if sgdisk "$disk" --attributes="$partnum":set:2 &>/dev/null; then
+                echo "Attribute Legacy Bios Bootable Set - $part"
+            else
+                echo "FAILED to set attribute Legacy BIOS Bootable on $part"
+                exit 3
+            fi
+        fi
+    done
+    return 0
+}
+
+install_mbr() {
+    # If any bootdev is a block device without partitions bail
+    # we want to install the mbr to a partitioned disk
+    for dev in "${!bootdevs[@]}"; do
+        dev_is_part "$dev" || { echo "$dev - is a block device. Aborting MBR install"; return 1; }
+    done
+
+    for part in "${!bootdevs[@]}"; do
+        local partnum="${part##*[[:alpha:]]}"
+        case "$part" in
+            *[[:digit:]]p[[:digit:]]*)
+                local disk="${part%%p$partnum}" # get everything before p1
+                ;;
+            *)
+                local disk="${part%%[[:digit:]]*}"
+                ;;
+        esac
+        local ptb="${bootdevs[$part]}"
+
+        # We want to install to the root of the block device
+        # If the device is a partition - ABORT!
+        dev_is_part "$disk" && \
+        { echo "ABORT! MBR installation to partition ($disk)!"; exit 4;}
+
+        if [[ "$ptb" = MBR ]]; then
+            mbrfile="$libpath/mbr.bin"
+        elif [[ "$ptb" = GPT ]]; then
+            mbrfile="$libpath/gptmbr.bin"
+        fi
+
+        if dd bs=440 count=1 conv=notrunc if="$mbrfile" of="$disk" &> /dev/null; then
+            echo "Installed MBR ($mbrfile) to $disk"
+        else
+            echo "Error Installing MBR ($mbrfile) to $disk"
+            exit 4
+        fi
+    done
+    return 0
+}
+
+_install() {
+    # Copy files to /boot
+    for file in "${com32_files[@]}"; do
+        # Symlink files even if links exist
+        if [[ "$boot" = root ]]; then
+            ln -s "${libpath#$CHROOT}/$file" "$bootpath/$file" &> /dev/null
+        elif [[ "$boot" = boot ]]; then
+            cp "$libpath/$file" "$bootpath/$file"
+        fi
+    done
+
+    # Copy / Symlink pci.ids if we copy the com32 module and if pci.ids exists in the FS
+    if check_is_in "hdt.c32" "${com32_files[@]}" && [[ -f $pciids_file ]]; then 
+        if [[ "$boot" = root ]]; then
+            ln -s "$pciids_file" "$bootpath/pci.ids" &> /dev/null
+        elif [[ "$boot" = boot ]]; then
+            cp "$pciids_file" "$bootpath/pci.ids" &> /dev/null
+        fi
+    fi
+
+    if device_is_raid "$bootpart"; then
+        echo "Detected RAID on /boot - installing Syslinux with --raid"
+        "$extlinux" --install "$bootpath" -r > /dev/null 2>&1
+    else
+        "$extlinux" --install "$bootpath" > /dev/null 2>&1
+    fi
+
+    if (( $? )); then
+        echo "Syslinux install failed"
+        exit 2
+    else
+        echo "Syslinux install successful"
+    fi
+
+    touch "$CHROOT/$autoupdate_file"
+}
+
+update() {
+    # Update any com and c32 files in /boot
+    if [[ "$boot" = boot ]]; then
+        for file in "$bootpath"/*.{c32,com}; do
+            file=$(basename "$file")
+            cp "$libpath/$file" "$bootpath/$file" &> /dev/null
+        done
+        if [[ -f "$bootpath/pci.ids" ]]; then
+            cp "$pciids_file" "$bootpath/pci.ids" &> /dev/null
+        fi
+    fi
+
+    if device_is_raid $bootpart; then
+        echo "Detected RAID on /boot - installing Syslinux with --raid"
+        "$extlinux" --update "$bootpath" -r &> /dev/null
+    else
+        "$extlinux" --update "$bootpath" &> /dev/null
+    fi
+
+    if (($?)); then
+        echo "Syslinux update failed"
+        exit 2
+    else
+        echo "Syslinux update successful"
+    fi
+}
+
+if (( $# == 0 )); then
+    usage
+    exit 1
+fi
+
+while getopts "c:uihmas" opt; do
+    case $opt in
+        c)
+            CHROOT=$(readlink -e "$OPTARG")
+            if [[ -z $CHROOT ]]; then
+                echo "error: chroot path ``$OPTARG does not exist";
+                exit 1
+            fi
+            ;;
+        h)
+            USAGE="True"
+            ;;
+        i)
+            INSTALL="True"
+            ;;
+        u)
+            UPDATE="True"
+            ;;
+        m)
+            MBR="True"
+            ;;
+        a)
+            SET_ACTIVE="True"
+            ;;
+        s)
+            # If AUTOUPDATE_FILE does not exist exit the script
+            if [[ -f $autoupdate_file ]]; then
+                UPDATE="True"
+            else
+                exit 0
+            fi
+            ;;
+        *)
+            usage
+            exit 1
+            ;;
+    esac
+done
+
+if [[ $USAGE ]]; then
+    usage
+    exit 0
+fi
+
+# Make sure only root can run our script
+if (( $(id -u) != 0 )); then
+    echo "This script must be run as root" 1>&2
+    exit 1
+fi
+
+# Display Usage Information if both Install and Update are passed
+if [[ $INSTALL && $UPDATE ]]; then
+    usage
+    exit 1
+fi
+
+# If a chroot dir is path set variables to reflect chroot
+if [[ "$CHROOT" ]]; then
+    libpath="$CHROOT$libpath"
+    bootpath="$CHROOT$bootpath"
+    extlinux="$CHROOT$extlinux"
+fi
+
+# Exit if no /boot path exists
+if ( f=("$bootpath"/*); (( ! ${#f[@]} )) ); then
+    echo "Error: $bootpath is empty!"
+    echo "Is /boot mounted?"
+    exit 1
+fi
+
+# Get the boot device if any of these options are passed
+if [[ $INSTALL || $UPDATE || $SET_ACTIVE || $MBR ]]; then
+    getBoot
+fi
+
+# Install or Update
+if [[ $INSTALL ]]; then
+    _install || exit
+elif [[ $UPDATE ]]; then
+    update || exit
+fi
+
+
+# SET_ACTIVE and MBR
+if [[ $SET_ACTIVE ]] || [[ $MBR ]]; then
+    get_boot_devices
+
+    if [[ $SET_ACTIVE ]]; then
+        set_active || exit
+    fi
+
+    if [[ $MBR ]]; then
+        install_mbr || exit
+    fi
+fi
+
+exit 0
+
+# vim: set et sw=4:
diff --git a/libre/syslinux/syslinux.cfg b/libre/syslinux/syslinux.cfg
new file mode 100644
index 000000000..79e81986e
--- /dev/null
+++ b/libre/syslinux/syslinux.cfg
@@ -0,0 +1,74 @@
+# Config file for Syslinux -
+# /boot/syslinux/syslinux.cfg
+#
+# Comboot modules:
+#   * menu.c32 - provides a text menu
+#   * vesamenu.c32 - provides a graphical menu
+#   * chain.c32 - chainload MBRs, partition boot sectors, Windows bootloaders
+#   * hdt.c32 - hardware detection tool
+#   * reboot.c32 - reboots the system
+#   * poweroff.com - shutdown the system
+#
+# To Use: Copy the respective files from /usr/lib/syslinux to /boot/syslinux.
+# If /usr and /boot are on the same file system, symlink the files instead
+# of copying them.
+#
+# If you do not use a menu, a 'boot:' prompt will be shown and the system
+# will boot automatically after 5 seconds.
+#
+# Please review the wiki: https://wiki.archlinux.org/index.php/Syslinux
+# The wiki provides further configuration examples
+
+DEFAULT parabola
+PROMPT 0        # Set to 1 if you always want to display the boot: prompt
+TIMEOUT 50
+# You can create syslinux keymaps with the keytab-lilo tool
+#KBDMAP de.ktl
+
+# Menu Configuration
+# Either menu.c32 or vesamenu32.c32 must be copied to /boot/syslinux 
+UI menu.c32
+#UI vesamenu.c32
+
+# Refer to http://syslinux.zytor.com/wiki/index.php/Doc/menu
+MENU TITLE Parabola GNU/Linux-libre
+MENU BACKGROUND splash.png
+MENU COLOR border       30;44   #40ffffff #a0000000 std
+MENU COLOR title        1;36;44 #9033ccff #a0000000 std
+MENU COLOR sel          7;37;40 #e0ffffff #20ffffff all
+MENU COLOR unsel        37;44   #50ffffff #a0000000 std
+MENU COLOR help         37;40   #c0ffffff #a0000000 std
+MENU COLOR timeout_msg  37;40   #80ffffff #00000000 std
+MENU COLOR timeout      1;37;40 #c0ffffff #00000000 std
+MENU COLOR msg07        37;40   #90ffffff #a0000000 std
+MENU COLOR tabmsg       31;40   #30ffffff #00000000 std
+
+# boot sections follow
+#
+# TIP: If you want a 1024x768 framebuffer, add "vga=773" to your kernel line.
+#
+#-*
+
+LABEL parabola
+	MENU LABEL Parabola GNU/Linux-libre
+	LINUX ../vmlinuz-linux-libre
+	APPEND root=/dev/sda3 ro
+	INITRD ../initramfs-linux-libre.img
+
+LABEL parabolafallback
+	MENU LABEL Parabola GNU/Linux-libre Fallback
+	LINUX ../vmlinuz-linux-libre
+	APPEND root=/dev/sda3 ro
+	INITRD ../initramfs-linux-libre-fallback.img
+
+LABEL hdt
+        MENU LABEL HDT (Hardware Detection Tool)
+        COM32 hdt.c32
+ 
+LABEL reboot
+        MENU LABEL Reboot
+        COM32 reboot.c32
+ 
+LABEL off
+        MENU LABEL Power Off
+        COMBOOT poweroff.com
diff --git a/libre/syslinux/syslinux.install b/libre/syslinux/syslinux.install
new file mode 100644
index 000000000..0dc0ece36
--- /dev/null
+++ b/libre/syslinux/syslinux.install
@@ -0,0 +1,13 @@
+post_install() {
+  echo "==> If you want to use syslinux as your bootloader"
+  echo "==> edit /boot/syslinux/syslinux.cfg and run"
+  echo "==>   # /usr/sbin/syslinux-install_update -i -a -m"
+  echo "==> to install it."
+}
+
+post_upgrade() {
+  # auto-update syslinux if /boot/syslinux/SYSLINUX_AUTOUPDATE exists
+  /usr/sbin/syslinux-install_update -s
+}
+
+# vim:set ts=2 sw=2 et: