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#!/bin/bash --norc
kver=$(uname -r)
boot_dir="/boot"
quiet=0
host_only=0
force=0
error() { echo "$@" >&2; }
usage () {
[[ $1 = '-n' ]] && cmd=echo || cmd=error
$cmd "usage: ${0##*/} [--version] [--help] [-v] [-f] [--preload <module>]"
$cmd " [--image-version] [--with=<module>]"
$cmd " [--nocompress]"
$cmd " <initrd-image> <kernel-version>"
$cmd ""
$cmd " (ex: ${0##*/} /boot/initramfs-$kver.img $kver)"
[[ $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
}
# 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
# user mode linux
if grep -q UML /proc/cpuinfo; then
regex='linux'
fi
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 ${1%%=*} in
--with-usb) read_arg usbmodule "$@" || shift $?
basicmodules="$basicmodules ${usbmodule:-usb-storage}"
unset usbmodule;;
--with-avail) read_arg modname "$@" || shift $?
basicmodules="$basicmodules $modname";;
--with) read_arg modname "$@" || shift $?
basicmodules="$basicmodules $modname";;
--version)
echo "mkinitrd: dracut compatibility wrapper"
exit 0;;
-v|--verbose) dracut_args="${dracut_args} -v";;
-f|--force) force=1;;
--preload) read_arg modname "$@" || shift $?
basicmodules="$basicmodules $modname";;
--image-version) img_vers=yes;;
--rootfs|-d) read_arg rootfs "$@" || shift $?
dracut_args="${dracut_args} --filesystems $rootfs";;
--nocompress) dracut_args="$dracut_args --no-compress";;
--help) usage -n;;
--builtin) ;;
--without*) ;;
--without-usb) ;;
--fstab*) ;;
--ifneeded) ;;
--omit-scsi-modules) ;;
--omit-ide-modules) ;;
--omit-raid-modules) ;;
--omit-lvm-modules) ;;
--omit-dmraid) ;;
--allow-missing) ;;
--net-dev*) ;;
--noresume) ;;
--rootdev*) ;;
--thawdev*) ;;
--rootopts*) ;;
--root*) ;;
--loopdev*) ;;
--loopfs*) ;;
--loopopts*) ;;
--looppath*) ;;
--dsdt*) ;;
--bootchart) ;;
-s) ;;
--quiet|-q) quiet=1;;
-b) read_arg boot_dir "$@" || shift $?
if [ ! -d $boot_dir ];then
error "Boot directory $boot_dir does not exist"
exit 1
fi
;;
-k) # Would be nice to get a list of images here
read_arg kernel_images "$@" || 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 $initrd_images;do
targets="$targets $boot_dir/$initrd_image"
done
;;
*) 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 )
[[ $host_only == 1 ]] && dracut_args="${dracut_args} -H"
[[ $force == 1 ]] && dracut_args="${dracut_args} -f"
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 [[ $basicmodules ]]; then
dracut $dracut_args --add-drivers "$basicmodules" "$target" \
"$kernel" &>/dev/null
else
dracut $dracut_args "$target" "$kernel" &>/dev/null
fi
else
if [[ $basicmodules ]]; then
dracut $dracut_args --add-drivers "$basicmodules" "$target" \
"$kernel"
else
dracut $dracut_args "$target" "$kernel"
fi
fi
done