This script is necessary to integrate dracut into the initramfs-
infrastructure of debian.
The file itself is just a copy from initramfs-tools' update-initramfs,
with a few lines modified to run dracut instead of mkinitramfs.
---
dracut-update-initramfs | 558 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 558 insertions(+), 0 deletions(-)
create mode 100755 dracut-update-initramfs
diff --git a/dracut-update-initramfs b/dracut-update-initramfs
new file mode 100755
index 0000000..36a98a2
--- /dev/null
+++ b/dracut-update-initramfs
@@ -0,0 +1,558 @@
+#!/bin/sh
+
+STATEDIR=/var/lib/dracut
+BOOTDIR=/boot
+CONF=/etc/dracut.conf
+KPKGCONF=/etc/kernel-img.conf
+USETRIGGERS=true
+mode=""
+version=""
+
+set -e
+
+if $USETRIGGERS \
+ && [ x"$DPKG_MAINTSCRIPT_PACKAGE" != x ] \
+ && [ $# = 1 ] \
+ && [ x"$1" = x-u ] \
+ && dpkg-trigger --check-supported 2>/dev/null
+then
+ if dpkg-trigger --no-await update-initramfs; then
+ echo "dracut-update-initramfs: deferring update (trigger activated)"
+ exit 0
+ fi
+fi
+
+usage()
+{
+ if [ -n "${1}" ]; then
+ printf "${@}\n\n" >&2
+ fi
+ cat >&2 << EOF
+Usage: ${0} [OPTION]...
+
+Options:
+ -k [version] Specify kernel version or 'all'
+ -c Create a new initramfs
+ -u Update an existing initramfs
+ -d Remove an existing initramfs
+ -t Take over a custom initramfs with this one
+ -b Set alternate boot directory
+ -v Be verbose
+ -h This message
+
+EOF
+ exit 1
+}
+
+# chroot check
+chrooted()
+{
+ # borrowed from udev's postinst
+ if [ "$(stat -c %d/%i /)" = "$(stat -Lc %d/%i /proc/1/root 2>/dev/null)" ]; then
+ # the devicenumber/inode pair of / is the same as that of
+ # /sbin/init's root, so we're *not* in a chroot and hence
+ # return false.
+ return 1
+ fi
+ return 0
+}
+
+mild_panic()
+{
+ if [ -n "${1}" ]; then
+ printf "${@}\n" >&2
+ fi
+ exit 0
+}
+
+panic()
+{
+ if [ -n "${1}" ]; then
+ printf "${@}\n" >&2
+ fi
+ exit 1
+}
+
+verbose()
+{
+ if [ "${verbose}" = 1 ]; then
+ printf "${@}\n"
+ fi
+}
+
+version_exists()
+{
+ [ -e "${STATEDIR}/${1}" ] && [ -e "${initramfs}" ]
+ return $?
+}
+
+set_initramfs()
+{
+ initramfs="${BOOTDIR}/dracut.img-${version}"
+}
+
+
+# backup initramfs while running
+backup_initramfs()
+{
+ [ ! -r "${initramfs}" ] && return 0
+ initramfs_bak="${initramfs}.dpkg-bak"
+ [ -r "${initramfs_bak}" ] && rm -f "${initramfs_bak}"
+ ln -f "${initramfs}" "${initramfs_bak}" \
+ || cp -a "${initramfs}" "${initramfs_bak}"
+ verbose "Keeping ${initramfs_bak}"
+}
+
+# keep booted initramfs
+backup_booted_initramfs()
+{
+ initramfs_bak="${initramfs}.dpkg-bak"
+
+ # first time run thus no backup
+ [ ! -r "${initramfs_bak}" ] && return 0
+
+ # chroot with no /proc
+ [ ! -r /proc/uptime ] && rm -f "${initramfs_bak}" && return 0
+
+ # no kept backup wanted
+ [ "${backup_initramfs}" = "no" ] && rm -f "${initramfs_bak}" && return 0
+
+ # no backup yet
+ if [ ! -r "${initramfs}.bak" ]; then
+ mv -f ${initramfs_bak} "${initramfs}.bak"
+ verbose "Backup ${initramfs}.bak"
+ return 0
+ fi
+
+ # keep booted initramfs
+ uptime_days=$(awk '{printf "%d", $1 / 3600 / 24}' /proc/uptime)
+ if [ -n "$uptime_days" ]; then
+ boot_initramfs=$(find "${initramfs}.bak" -mtime +${uptime_days})
+ fi
+ if [ -n "${boot_initramfs}" ]; then
+ mv -f "${initramfs_bak}" "${initramfs}.bak"
+ verbose "Backup ${initramfs}.bak"
+ return 0
+ fi
+ verbose "Removing current backup ${initramfs_bak}"
+ rm -f ${initramfs_bak}
+}
+
+# nuke generated copy
+remove_initramfs()
+{
+ [ -z "${initramfs_bak}" ] && return 0
+ rm -f "${initramfs_bak}"
+ verbose "Removing ${initramfs_bak}"
+}
+
+
+generate_initramfs()
+{
+ echo "dracut-update-initramfs: Generating ${initramfs}"
+ OPTS=""
+ if [ "${verbose}" = 1 ]; then
+ OPTS="-v ${OPTS}"
+ fi
+ ##WORK HERE!
+ if dracut ${OPTS} "${initramfs}.new" "${version}"; then
+ mv -f "${initramfs}.new" "${initramfs}"
+ set_sha1
+ else
+ mkinitramfs_return="$?"
+ remove_initramfs
+ rm -f "${initramfs}.new"
+ if [ "$mkinitramfs_return" = "2" ]; then
+ # minversion wasn't met, exit 0
+ exit 0
+ fi
+ echo "update-initramfs: failed for ${initramfs}"
+ exit $mkinitramfs_return
+ fi
+}
+
+# lilo call
+run_lilo()
+{
+ # show lilo errors on failure
+ if ! lilo -t > /dev/null 2>&1 ; then
+ echo "ERROR lilo fails for new ${initramfs}:"
+ echo
+ lilo -t
+ fi
+ lilo
+}
+
+# check if lilo is on mbr
+mbr_check()
+{
+ # try to discover grub|grub2 and be happy
+ [ -r /boot/grub/grub.cfg ] \
+ && groot=$(awk '/^set root=/{print substr($2, 7, 3); exit}' \
+ /boot/grub/grub.cfg)
+ [ -r /boot/grub/menu.lst ] \
+ && groot=$(awk '/^root/{print substr($2, 2, 3); exit}' \
+ /boot/grub/menu.lst)
+ [ -e /boot/grub/device.map ] && [ -n "${groot}" ] \
+ && dev=$(awk "/${groot}/{ print \$NF}" /boot/grub/device.map)
+ [ -n "${dev}" ] && [ -r ${dev} ] \
+ && dd if="${dev}" bs=512 skip=0 count=1 2> /dev/null \
+ | grep -q GRUB && return 0
+
+ # check out lilo.conf for validity
+ boot=$(awk -F = '/^boot=/{ print $2}' /etc/lilo.conf)
+ [ -z "${boot}" ] && return 0
+ case ${boot} in
+ /dev/md/*)
+ if [ -r /proc/mdstat ]; then
+ MD=${boot#/dev/md/}
+ boot="/dev/$(awk "/^md${MD}/{print substr(\$5, 1, 3)}" \
+ /proc/mdstat)"
+ fi
+ ;;
+ /dev/md*)
+ if [ -r /proc/mdstat ]; then
+ MD=${boot#/dev/}
+ boot="/dev/$(awk "/^${MD}/{print substr(\$5, 1, 3)}" \
+ /proc/mdstat)"
+ fi
+ ;;
+ esac
+ [ ! -r "${boot}" ] && return 0
+ dd if="${boot}" bs=512 skip=0 count=1 2> /dev/null | grep -q LILO \
+ && run_lilo && return 0
+
+ # no idea which bootloader is used
+ echo
+ echo "WARNING: grub and lilo installed."
+ echo "If you use grub as bootloader everything is fine."
+ echo "If you use lilo as bootloader you must run lilo!"
+ echo
+}
+
+# Invoke bootloader
+run_bootloader()
+{
+ # if both lilo and grub around, figure out if lilo needs to be run
+ if ( command -v update-grub >/dev/null 2>&1 \
+ || [ -e /boot/grub/menu.lst ] || [ -e /boot/grub/grub.cfg ] ) \
+ && ( [ -e /etc/lilo.conf ] && command -v lilo >/dev/null 2>&1 ); then
+ [ -r "${KPKGCONF}" ] && \
+ do_b=$(awk '/^do_bootloader/{print $3}' "${KPKGCONF}")
+ if [ "${do_b}" = "yes" ] || [ "${do_b}" = "Yes" ] \
+ || [ "${do_b}" = "YES" ]; then
+ run_lilo
+ return 0
+ elif [ "${do_b}" = "no" ] || [ "${do_b}" = "No" ] \
+ || [ "${do_b}" = "NO" ]; then
+ return 0
+ fi
+
+ # do_bootloader unconfigured
+ mbr_check
+ return 0
+ fi
+ if [ -r /etc/lilo.conf ] && command -v lilo >/dev/null 2>&1; then
+ run_lilo
+ return 0
+ fi
+ if command -v elilo >/dev/null 2>&1; then
+ elilo
+ return 0
+ fi
+ if [ -r /etc/zipl.conf ]; then
+ zipl
+ fi
+ if flash-kernel --supported >/dev/null 2>&1; then
+ flash-kernel ${version}
+ fi
+}
+
+compare_sha1()
+{
+ sha1sum "${initramfs}" | diff "${STATEDIR}/${version}" - >/dev/null 2>&1
+ return $?
+}
+
+# Note that this must overwrite so that updates work.
+set_sha1()
+{
+ sha1sum "${initramfs}" > "${STATEDIR}/${version}"
+}
+
+delete_sha1()
+{
+ rm -f "${STATEDIR}/${version}"
+}
+
+# ro /boot is not modified
+ro_boot_check()
+{
+ # check irrelevant inside of a chroot
+ if [ ! -r /proc/mounts ] || chrooted; then
+ return 0
+ fi
+
+ boot_opts=$(awk '/boot/{if ((match($4, /^ro/) || match($4, /,ro/)) \
+ && $2 == "/boot") print "ro"}' /proc/mounts)
+ if [ -n "${boot_opts}" ]; then
+ echo "WARNING: /boot is ro mounted."
+ echo "update-initramfs: Not updating ${initramfs}"
+ exit 0
+ fi
+}
+
+get_sorted_versions()
+{
+ version_list=""
+
+ for gsv_x in "${STATEDIR}"/*; do
+ gsv_x="$(basename "${gsv_x}")"
+ if [ "${gsv_x}" = '*' ]; then
+ return 0
+ fi
+ worklist=""
+ for gsv_i in $version_list; do
+ if dpkg --compare-versions "${gsv_x}" '>' "${gsv_i}"; then
+ worklist="${worklist} ${gsv_x} ${gsv_i}"
+ gsv_x=""
+ else
+ worklist="${worklist} ${gsv_i}"
+ fi
+ done
+ if [ "${gsv_x}" != "" ]; then
+ worklist="${worklist} ${gsv_x}"
+ fi
+ version_list="${worklist}"
+ done
+
+ verbose "Available versions: ${version_list}"
+}
+
+set_current_version()
+{
+ if [ -f /boot/dracut.img-`uname -r` ]; then
+ version=`uname -r`
+ fi
+}
+
+set_linked_version()
+{
+ if [ -e /initrd.img ] && [ -L /initrd.img ]; then
+ linktarget="$(basename "$(readlink /initrd.img)")"
+ fi
+
+ if [ -e /boot/initrd.img ] && [ -L /boot/initrd.img ]; then
+ linktarget="$(basename "$(readlink /boot/initrd.img)")"
+ fi
+
+ if [ -z "${linktarget}" ]; then
+ return
+ fi
+
+ version="${linktarget##*img-}"
+}
+
+set_highest_version()
+{
+ get_sorted_versions
+ set -- ${version_list}
+ version=${1}
+}
+
+create()
+{
+ if [ -z "${version}" ]; then
+ usage "Create mode requires a version argument"
+ fi
+
+ set_initramfs
+
+ if [ "${takeover}" = 0 ]; then
+ if version_exists "${version}"; then
+ panic "Cannot create version ${version}: already exists"
+ fi
+
+ if [ -e "${initramfs}" ]; then
+ panic "${initramfs} already exists, cannot create."
+ fi
+ fi
+
+ generate_initramfs
+}
+
+update()
+{
+ if [ "${update_initramfs}" = "no" ]; then
+ echo "update-initramfs: Not updating initramfs."
+ exit 0
+ fi
+
+ if [ -z "${version}" ]; then
+ set_highest_version
+ fi
+
+ if [ -z "${version}" ]; then
+ set_linked_version
+ fi
+
+ if [ -z "${version}" ]; then
+ set_current_version
+ fi
+
+ if [ -z "${version}" ]; then
+ verbose "Nothing to do, exiting."
+ exit 0
+ fi
+
+ set_initramfs
+
+ ro_boot_check
+
+ altered_check
+
+ backup_initramfs
+
+ generate_initramfs
+
+ run_bootloader
+
+ backup_booted_initramfs
+}
+
+delete()
+{
+ if [ -z "${version}" ]; then
+ usage "Delete mode requires a version argument"
+ fi
+
+ set_initramfs
+
+ if [ ! -e "${initramfs}" ]; then
+ panic "Cannot delete ${initramfs}, doesn't exist."
+ fi
+
+ if ! version_exists "${version}"; then
+ panic "Cannot delete version ${version}: Not created by this utility."
+ fi
+
+ altered_check
+
+ echo "update-initramfs: Deleting ${initramfs}"
+
+ delete_sha1
+
+ rm -f "${initramfs}"
+}
+
+# Check for update mode on existing and modified initramfs
+altered_check()
+{
+ # No check on takeover
+ [ "${takeover}" = 1 ] && return 0
+ if [ ! -e "${initramfs}" ]; then
+ mild_panic "${initramfs} does not exist. Cannot update."
+ fi
+ if ! compare_sha1; then
+ echo "update-initramfs: ${initramfs} has been altered." >&2
+ mild_panic "update-initramfs: Cannot update. Override with -t option."
+ fi
+}
+
+# Defaults
+verbose=0
+yes=0
+# We default to takeover=1 in Ubuntu, but not Debian
+takeover=0
+
+##
+
+while getopts "k:cudyvtb:h?" flag; do
+ case "${flag}" in
+ k)
+ version="${OPTARG}"
+ ;;
+ c)
+ mode="c"
+ ;;
+ d)
+ mode="d"
+ ;;
+ u)
+ mode="u"
+ ;;
+ v)
+ verbose="1"
+ ;;
+ y)
+ yes="1"
+ ;;
+ t)
+ takeover="1"
+ ;;
+ b)
+ BOOTDIR="${OPTARG}"
+ if [ ! -d "${BOOTDIR}" ]; then
+ echo "Error: ${BOOTDIR} is not a directory."
+ exit 1
+ fi
+ ;;
+ h|?)
+ usage
+ ;;
+ esac
+done
+
+shift $((${OPTIND} - 1))
+
+if [ $# -ne 0 ]; then
+ echo "Invalid argument for option -k."
+ usage
+fi
+
+# Validate arguments
+if [ -z "${mode}" ]; then
+ usage "You must specify at least one of -c, -u, or -d."
+fi
+
+if [ "${version}" = "all" ] \
+ || ( [ "${update_initramfs}" = "all" ] && [ -z "${version}" ] ); then
+ : FIXME check for --yes, and if not ask are you sure
+ get_sorted_versions
+ if [ -z "${version_list}" ]; then
+ verbose "Nothing to do, exiting."
+ exit 0
+ fi
+
+ OPTS="-b ${BOOTDIR}"
+ if [ "${verbose}" = "1" ]; then
+ OPTS="${OPTS} -v"
+ fi
+ if [ "${takeover}" = "1" ]; then
+ OPTS="${OPTS} -t"
+ fi
+ if [ "${yes}" = "1" ]; then
+ OPTS="${OPTS} -y"
+ fi
+ for u_version in ${version_list}; do
+ # Don't stop if one version doesn't work.
+ set +e
+ verbose "Execute: ${0} -${mode} -k \"${u_version}\" ${OPTS}"
+ "${0}" -${mode} -k "${u_version}" ${OPTS}
+ set -e
+ done
+ exit 0
+fi
+
+
+case "${mode}" in
+ c)
+ create
+ ;;
+ d)
+ delete
+ ;;
+ u)
+ update
+ ;;
+esac
--
1.6.5.3
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