@ -1,10 +1,12 @@
#!/bin/sh
#!/bin/sh
#
# The Qubes OS Project, http://www.qubes-os.org
#
# Copyright (C) 2015 Marek Marczykowski-Górecki
# <marmarekp@invisiblethingslab.com>
#
# Copyright © 2016 Sébastien Luttringer
#
# 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
@ -25,23 +27,6 @@ set -e
basedir = /var/lib/qubes/vm-kernels
function recompile_u2mfn( ) {
kver = $1
u2mfn_ver = ` dkms status u2mfn| tail -n 1| cut -f 2 -d ' ' | tr -d ':,' `
if ! modinfo -k " $kver " -n u2mfn 2>& 1 > /dev/null; then
echo "Module u2mfn not available. Checking available source to be built."
u2mfn_ver = ` cat /usr/src/u2mfn-*/dkms.conf | grep PACKAGE_VERSION | cut -d "=" -f 2 | tr -d '"' | sort -u | head -n 1`
if [ -z " $u2mfn_ver " ] ; then
echo "No source found for u2mfn. Is qubes-vm-kernel-support installed correctly?"
return 1
else
echo " Found sources for u2mfn version $u2mfn_ver "
fi
dkms install u2mfn/$u2mfn_ver -k $kver --no-initrd
fi
}
function build_modules_img( ) {
kver = $1
output_file = $2
@ -77,39 +62,101 @@ function build_initcpio() {
chmod 644 " $output_file "
}
if [ -z " $1 " ] ; then
echo " Usage: $0 <kernel-version> <kernel-name> [<display-kernel-version>] " >& 2
exit 1
fi
if [ ! -d /lib/modules/$1 ] ; then
echo " ERROR: Kernel version $1 not installed " >& 2
exit 1
fi
kernel_version = $1
if [ -n " $2 " ] ; then
kernel_code = " -linux- $2 "
else
kernel_code = "-linux"
fi
if [ -n " $3 " ] ; then
output_dir = " $basedir / $3 "
else
output_dir = " $basedir / $kernel_version "
fi
echo " --> Building files for $kernel_version in $output_dir "
echo "---> Recompiling kernel module (u2mfn)"
recompile_u2mfn " $kernel_version "
mkdir -p " $output_dir "
cp " /boot/vmlinuz $kernel_code " " $output_dir /vmlinuz $kernel_code "
echo "---> Generating modules.img"
build_modules_img " $kernel_version " " $output_dir /modules.img "
echo "---> Generating initramfs"
build_initcpio " $kernel_version " " $output_dir /initramfs $kernel_code .img "
echo "--> Done."
do_prepare_xen_kernel( ) {
kernel_version = " $1 "
kernel_base = " $2 "
kernel_code = " $3 "
output_dir = " $basedir / $kernel_version "
echo " --> Building files for $kernel_version in $output_dir "
mkdir -p " $output_dir "
cp " /boot/vmlinuz-linux- $kernel_code " " $output_dir /vmlinuz-linux- $kernel_code "
echo "---> Generating modules.img"
build_modules_img " $kernel_version " " $output_dir /modules.img "
echo "---> Generating initramfs"
build_initcpio " $kernel_version " " $output_dir /initramfs- $kernel_code .img "
echo "--> Done."
}
# display what to run and run it quietly
run( ) {
echo " ==> $* "
" $@ " > /dev/null
}
# check kernel is valid for action
# it means kernel and its headers are installed
# $1: kernel version
check_kernel( ) {
local kver = " $1 " ; shift
echo " Install tree: $install_tree / $kver /kernel "
if [ [ ! -d " $install_tree / $kver /kernel " ] ] ; then
echo " ==> No kernel $kver modules. You must install them to use DKMS! "
return 1
elif [ [ ! -d " $install_tree / $kver /build/include " ] ] ; then
echo " ==> No kernel $kver headers. You must install them to use DKMS! "
return 1
fi
return 0
}
# handle actions on kernel addition/upgrade/removal
# $1: kernel version
# $*: dkms args
do_kernel( ) {
local kver = " $1 " ; shift
check_kernel " $kver " || return
# do $@ once for each dkms module in $source_tree
local path
for path in " $install_tree " /" $kver " /extra/u2mfn.ko; do
echo " Preparing kernel for $path "
if [ [ " $path " = ~ ^$install_tree /( [ ^/] +) -( [ ^/] +) /extra/u2mfn\. ko$ ] ] ; then
do_prepare_xen_kernel " $kver " " ${ BASH_REMATCH [1] } " " ${ BASH_REMATCH [2] } "
fi
done
}
# emulated program entry point
main( ) {
# prevent to have all each dkms call to fail
if ( ( EUID ) ) ; then
echo 'You must be root to use this hook' >& 2
exit 1
fi
# dkms path from framework config
# note: the alpm hooks which trigger this script use static path
source_tree = '/usr/src'
install_tree = '/usr/lib/modules'
# check source_tree and install_tree exists
local path
for path in " $source_tree " " $install_tree " ; do
if [ [ ! -d " $path " ] ] ; then
echo " ==> Missing mandatory directory: $path . Exiting! "
return 1
fi
done
if [ -n " $1 " ] ; then
echo $install_tree
if [ [ " $1 " = ~ ^$install_tree /( [ ^/] +) / ] ] ; then
do_kernel " ${ BASH_REMATCH [1] } "
fi
else
# parse stdin paths to guess what do do
while read -r path; do
if [ [ " / $path " = ~ ^$install_tree /( [ ^/] +) / ] ] ; then
do_kernel " ${ BASH_REMATCH [1] } "
fi
done
fi
return 0
}
main " $@ "
Olivier MEDOC
8 years ago