From 2b3e22d60246e7c8bfa96a6d7504fb0bfa67e641 Mon Sep 17 00:00:00 2001

From: Hannes Reinecke <hare@suse.de>

Date: Fri, 29 Nov 2013 13:13:50 +0100

Subject: [PATCH] mkinitrd-suse: Add SUSE compability wrapper for dracut

SUSE has its own mkinitrd system. As the arguments clash

with the dracut-provided mkinitrd script I've added a new

mkinitrd-suse.sh wrapper.

Signed-off-by: Hannes Reinecke <hare@suse.de>

---

 mkinitrd-suse.sh | 354 +++++++++++++++++++++++++++++++++++++++++++++++++++++++

 1 file changed, 354 insertions(+)

 create mode 100755 mkinitrd-suse.sh

diff --git a/mkinitrd-suse.sh b/mkinitrd-suse.sh

new file mode 100755

index 0000000..d20270a

--- /dev/null

+++ b/mkinitrd-suse.sh

@@ -0,0 +1,354 @@

+#!/bin/bash --norc

+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-

+# ex: ts=8 sw=4 sts=4 et filetype=sh

+#

+# mkinitrd compability wrapper for SUSE.

+#

+# Copyright (c) 2013 SUSE Linux Products GmbH. All rights reserved.

+#

+# 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, see <http://www.gnu.org/licenses/>.

+#

+

+boot_dir="/boot"

+quiet=0

+host_only=1

+force=0

+logfile=/var/log/YaST2/mkinitrd.log

+dracut_cmd=dracut

+

+error() { echo "$@" >&2; }

+

+usage () {

+    [[ $1 = '-n' ]] && cmd=echo || cmd=error

+

+    $cmd "usage: ${0##*/} [options]"

+    $cmd ""

+    $cmd "	Create initial ramdisk images that contain all kernel modules needed"

+    $cmd "	in the early boot process, before the root file system becomes"

+    $cmd "	available."

+    $cmd "	This usually includes SCSI and/or RAID modules, a file system module"

+    $cmd "	for the root file system, or a network interface driver module for dhcp."

+    $cmd ""

+    $cmd "	options:"

+    $cmd "	-f \"feature list\"	Features to be enabled when generating initrd."

+    $cmd "				Available features are:"

+    $cmd "					iscsi, md, multipath, lvm, lvm2,"

+    $cmd "					ifup, fcoe, dcbd"

+    $cmd "	-k \"kernel list\"	List of kernel images for which initrd files are"

+    $cmd "				created. Defaults to all kernels found in /boot."

+    $cmd "	-i \"initrd list\"	List of file names for the initrd; position have"

+    $cmd "				match to \"kernel list\". Defaults to all kernels"

+    $cmd "				found in /boot."

+    $cmd "	-b boot_dir		Boot directory. Defaults to /boot."

+    $cmd "	-t tmp_dir		Temporary directory. Defaults to /var/tmp."

+    $cmd "	-M map			System.map file to use."

+    $cmd "	-A			Create a so called \"monster initrd\" which"

+    $cmd "				includes all features and modules possible."

+    $cmd "	-B			Do not update bootloader configuration."

+    $cmd "	-v			Verbose mode."

+    $cmd "	-L			Disable logging."

+    $cmd "	-h			This help screen."

+    $cmd "	-m \"module list\"	Modules to include in initrd. Defaults to the"

+    $cmd "				INITRD_MODULES variable in /etc/sysconfig/kernel"

+    $cmd "	-u \"DomU module list\"	Modules to include in initrd. Defaults to the"

+    $cmd "				DOMU_INITRD_MODULES variable in"

+    $cmd "				/etc/sysconfig/kernel."

+    $cmd "	-d root_device		Root device. Defaults to the device from"

+    $cmd "				which / is mounted. Overrides the rootdev"

+    $cmd "				enviroment variable if set."

+    $cmd "	-j device		Journal device"

+    $cmd "	-D interface		Run dhcp on the specified interface."

+    $cmd "	-I interface		Configure the specified interface statically."

+    $cmd "	-a acpi_dsdt		Attach compiled ACPI DSDT (Differentiated"

+    $cmd "				System Description Table) to initrd. This"

+    $cmd "				replaces the DSDT of the BIOS. Defaults to"

+    $cmd "				the ACPI_DSDT variable in /etc/sysconfig/kernel."

+    $cmd "	-s size			Add splash animation and bootscreen to initrd."

+

+    [[ $1 = '-n' ]] && exit 0

+    exit 1

+}

+

+# Little helper function for reading args from the commandline.

+# it automatically handles -a b and -a=b variants, and returns 1 if

+# we need to shift $3.

+read_arg() {

+    # $1 = arg name

+    # $2 = arg value

+    # $3 = arg parameter

+    param="$1"

+    local rematch='^[^=]*=(.*)$' result

+    if [[ $2 =~ $rematch ]]; then

+        read "$param" <<< "${BASH_REMATCH[1]}"

+    else

+	for ((i=3; $i <= $#; i++)); do

+            # Only read next arg if it not an arg itself.

+            if [[ ${@:$i:1} = -* ]];then

+		break

+            fi

+            result="$result ${@:$i:1}"

+            # There is no way to shift our callers args, so

+            # return "no of args" to indicate they should do it instead.

+	done

+	read "$1" <<< "$result"

+        return $(($i - 3))

+    fi

+}

+

+# Helper functions to calculate ipconfig command line

+calc_netmask() {

+    local prefix=$1

+

+    [ -z "$prefix" ] && return

+    mask=$(echo "(2 ^ 32) - (2 ^ $prefix)" | bc -l)

+    byte1=$(( mask >> 24 ))

+    byte2=$(( mask >> 16 ))

+    byte3=$(( mask >> 8 ))

+    byte4=$(( mask & 0xff ))

+    netmask=$(printf "%d.%d.%d.%d" $(( byte1 & 0xff )) $(( byte2 & 0xff )) $(( byte3 & 0xff )) $byte4);

+

+    echo $netmask

+}

+

+ipconfig() {

+    local interface=$1

+    local iplink macaddr broadcast gateway ipaddr prefix netmask

+

+    iplink=$(ip addr show dev $interface | sed -n 's/ *inet \(.*\) brd.*/\1/p')

+    macaddr=$(ip addr show dev $interface | sed -n 's/.*ether \(.*\) brd.*/\1/p')

+    broadcast=$(ip addr show dev $interface | sed -n 's/.*brd \(.*\) scope.*/\1/p')

+    gateway=$(ip route show dev $interface | sed -n 's/default via \([0-9\.]*\).*/\1/p')

+

+    ipaddr=${iplink%%/*}

+    prefix=${iplink##*/}

+    netmask=$(calc_netmask $prefix)

+

+    echo "${ipaddr}:${serveraddr}:${gateway}:${netmask}:${hostname}:${interface}:none::${macaddr}"

+}

+

+is_xen_kernel() {

+    local kversion=$1

+    local root_dir=$2

+    local cfg

+

+    for cfg in ${root_dir}/boot/config-$kversion $root_dir/lib/modules/$kversion/build/.config

+    do

+        test -r $cfg || continue

+        grep -q "^CONFIG_XEN=y\$" $cfg

+        return

+    done

+    test $kversion != "${kversion%-xen*}"

+    return

+}

+

+

+# Taken over from SUSE mkinitrd

+default_kernel_images() {

+    local regex kernel_image kernel_version version_version initrd_image

+    local qf='%{NAME}-%{VERSION}-%{RELEASE}\n'

+

+    case "$(uname -m)" in

+        s390|s390x)

+            regex='image'

+            ;;

+        ppc|ppc64)

+            regex='vmlinux'

+            ;;

+        i386|x86_64)

+            regex='vmlinuz'

+            ;;

+        arm*)

+            regex='[uz]Image'

+            ;;

+        aarch64)

+            regex='Image'

+            ;;

+        *)  regex='vmlinu.'

+            ;;

+    esac

+

+    kernel_images=""

+    initrd_images=""

+    for kernel_image in $(ls $boot_dir \

+            | sed -ne "\|^$regex\(-[0-9.]\+-[0-9]\+-[a-z0-9]\+$\)\?|p" \

+            | grep -v kdump$ ) ; do

+

+        # Note that we cannot check the RPM database here -- this

+        # script is itself called from within the binary kernel

+        # packages, and rpm does not allow recursive calls.

+

+        [ -L "$boot_dir/$kernel_image" ] && continue

+        [ "${kernel_image%%.gz}" != "$kernel_image" ] && continue

+        kernel_version=$(/usr/bin/get_kernel_version \

+                         $boot_dir/$kernel_image 2> /dev/null)

+        initrd_image=$(echo $kernel_image | sed -e "s|${regex}|initrd|")

+        if [ "$kernel_image" != "$initrd_image" -a \

+             -n "$kernel_version" -a \

+             -d "/lib/modules/$kernel_version" ]; then

+                kernel_images="$kernel_images $boot_dir/$kernel_image"

+                initrd_images="$initrd_images $boot_dir/$initrd_image"

+        fi

+    done

+    for kernel_image in $kernel_images;do

+	kernels="$kernels ${kernel_image#*-}"

+    done

+    for initrd_image in $initrd_images;do

+	targets="$targets $initrd_image"

+    done

+    host_only=1

+    force=1

+}

+

+while (($# > 0)); do

+    case ${1%%=*} in

+	-f) read_arg feature_list "$@" || shift $?

+	    # Could be several features

+	    ;;

+	-k) # Would be nice to get a list of images here

+	    read_arg kernel_images "$@" || shift $?

+	    for kernel_image in $kernel_images;do

+		kernels="$kernels ${kernel_image#*-}"

+	    done

+	    host_only=1

+	    force=1

+	    ;;

+	-i) read_arg initrd_images "$@" || shift $?

+	    for initrd_image in $initrd_images;do

+		# Check if the initrd_image contains a path.

+		# if not, then add the default boot_dir

+		dname=`dirname $initrd_image`

+		if [ "$dname" == "." ]; then

+                    targets="$targets $boot_dir/$initrd_image";

+		else

+                    targets="$targets $initrd_image";

+		fi

+	    done

+	    ;;

+	-b) read_arg boot_dir "$@" || shift $?

+	    if [ ! -d $boot_dir ];then

+		error "Boot directory $boot_dir does not exist"

+		exit 1

+	    fi

+	    ;;

+	-t) read_arg tmp_dir "$@" || shift $?

+	    dracut_args="${dracut_args} --tmpdir $tmp_dir"

+	    ;;

+	-M) read_arg map_file "$@" || shift $?

+	    ;;

+	-A) host_only=0;;

+	-B) skip_update_bootloader=1;;

+        -v|--verbose) dracut_args="${dracut_args} -v";;

+	-L) logfile=;;

+        -h|--help) usage -n;;

+	-m) read_arg module_list "$@" || shift $? ;;

+	-u) read_arg domu_module_list "$@" || shift $?

+	    echo "mkinitrd: DomU modules not yet supported" ;;

+        -d) read_arg rootfs "$@" || shift $?

+            dracut_args="${dracut_args} --filesystems $rootfs" ;;

+	-D) read_arg dhcp_if "$@" || shift $?

+	    dracut_cmdline="${dracut_cmdline} ip=${dhcp_if}:dhcp"

+	    ;;

+	-I) read_arg static_if "$@" || shift $?

+	    dracut_cmdline="${dracut_cmdline} ip=$(ipconfig $static_if)":

+	    ;;

+	-a) read_arg acpi_dsdt "$@" || shift $?

+	    echo "mkinitrd: custom DSDT not yet supported"

+	    exit 1

+	    ;;

+	-s) read_arg boot_splash "$@" || shift $?

+	    echo "mkinitrd: boot splash not yet supported"

+	    exit 1

+	    ;;

+	-V) echo "mkinitrd: vendor scipts are no longer supported"

+	    exit 1;;

+	--dracut)

+	    read_arg dracut_cmd "$@" || shift $? ;;

+        --version|-R)

+            echo "mkinitrd: dracut compatibility wrapper"

+            exit 0;;

+        --force) force=1;;

+	--quiet|-q) quiet=1;;

+        *)  if [[ ! $targets ]]; then

+            targets=$1

+            elif [[ ! $kernels ]]; then

+            kernels=$1

+            else

+            usage

+            fi;;

+    esac

+    shift

+done

+

+[[ $targets && $kernels ]] || default_kernel_images

+[[ $targets && $kernels ]] || (error "No kernel found in $boot_dir" && usage)

+

+# We can have several targets/kernels, transform the list to an array

+targets=( $targets )

+[[ $kernels ]] && kernels=( $kernels )

+

+[[ $logfile ]]        && dracut_args="${dracut_args} --logfile $logfile"

+[[ $host_only == 1 ]] && dracut_args="${dracut_args} --hostonly"

+[[ $force == 1 ]]     && dracut_args="${dracut_args} --force"

+[[ $dracut_cmdline ]] && dracut_args="${dracut_args} --kernel-cmdline ${dracut_cmdline}"

+[ -z "$(type -p update-bootloader)" ] && skip_update_bootloader=1

+

+# Update defaults from /etc/sysconfig/kernel

+if [ -f /etc/sysconfig/kernel ] ; then

+    . /etc/sysconfig/kernel

+fi

+[[ $module_list ]] || module_list="${INITRD_MODULES}"

+basicmodules="$basicmodules ${module_list}"

+[[ $domu_module_list ]] || domu_module_list="${DOMU_INITRD_MODULES}"

+[[ $acpi_dsdt ]] || acpi_dsdt="${ACPI_DSDT}"

+

+echo "Creating: target|kernel|dracut args|basicmodules "

+for ((i=0 ; $i<${#targets[@]} ; i++)); do

+

+    if [[ $img_vers ]];then

+	target="${targets[$i]}-${kernels[$i]}"

+    else

+	target="${targets[$i]}"

+    fi

+    kernel="${kernels[$i]}"

+

+    # Duplicate code: No way found how to redirect output based on $quiet

+    if [[ $quiet == 1 ]];then

+	echo "$target|$kernel|$dracut_args|$basicmodules"

+	if is_xen_kernel $kernel $rootfs ; then

+	    basicmodules="$basicmodules ${domu_module_list}"

+	fi

+	if [[ $basicmodules ]]; then

+            $dracut_cmd $dracut_args --add-drivers "$basicmodules" "$target" \

+		"$kernel" &>/dev/null

+	else

+            $dracut_cmd $dracut_args "$target" "$kernel" &>/dev/null

+	fi

+    else

+	if is_xen_kernel $kernel $rootfs ; then

+	    basicmodules="$basicmodules ${domu_module_list}"

+	fi

+	if [[ $basicmodules ]]; then

+            $dracut_cmd $dracut_args --add-drivers "$basicmodules" "$target" \

+		"$kernel"

+	else

+            $dracut_cmd $dracut_args "$target" "$kernel"

+	fi

+    fi

+done

+

+if [ "$skip_update_bootloader" ] ; then

+    echo 2>&1 "Did not refresh the bootloader. You might need to refresh it manually."

+else

+    update-bootloader --refresh

+fi