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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ#!/bin/sh BOOTDIR=/boot CONF=/etc/initramfs-tools/update-initramfs.conf mode="" version="" update_initramfs=yes backup_initramfs=no set -e [ -r ${CONF} ] && . ${CONF} if [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ] && [ $# = 1 ] && [ "$1" = -u ]; then if dpkg-trigger --no-await update-initramfs; then echo "update-initramfs: deferring update (trigger activated)" exit 0 fi fi usage() { cat << EOF Usage: update-initramfs {-c|-d|-u} [-k version] [-v] [-b directory] Options: -k version Specify kernel version or 'all' -c Create a new initramfs -u Update an existing initramfs -d Remove an existing initramfs -b directory Set alternate boot directory -v Be verbose See update-initramfs(8) for further details. EOF } usage_error() { if [ -n "${1:-}" ]; then printf "%s\\n\\n" "${*}" >&2 fi usage >&2 exit 2 } mild_panic() { if [ -n "${1:-}" ]; then printf "%s\\n" "${*}" >&2 fi exit 0 } panic() { if [ -n "${1:-}" ]; then printf "%s\\n" "${*}" >&2 fi exit 1 } verbose() { if [ "${verbose}" = 1 ]; then printf "%s\\n" "${*}" fi } set_initramfs() { initramfs="${BOOTDIR}/initrd.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 ${initramfs}.bak" return 0 fi # keep booted initramfs boot_initramfs= uptime_days=$(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_bak() { [ -z "${initramfs_bak:-}" ] && return 0 rm -f "${initramfs_bak}" verbose "Removing ${initramfs_bak}" } generate_initramfs() { echo "update-initramfs: Generating ${initramfs}" OPTS="-o" if [ "${verbose}" = 1 ]; then OPTS="-v ${OPTS}" fi # shellcheck disable=SC2086 if mkinitramfs ${OPTS} "${initramfs}.new" "${version}"; then mv -f "${initramfs}.new" "${initramfs}" # Guard against an unclean shutdown sync -f "${initramfs}" else mkinitramfs_return="$?" remove_initramfs_bak rm -f "${initramfs}.new" echo "update-initramfs: failed for ${initramfs} with $mkinitramfs_return." >&2 exit $mkinitramfs_return fi } # Invoke bootloader run_bootloader() { # invoke policy conformant bootloader hooks if [ -d /etc/initramfs/post-update.d/ ]; then run-parts --arg="${version}" --arg="${initramfs}" \ /etc/initramfs/post-update.d/ return 0 fi } # ro /boot is not modified ro_boot_check() { # check irrelevant inside of a chroot if [ ! -r /proc/mounts ] || ischroot; then return 0 fi # shellcheck disable=SC1004 boot_opts=$(awk '/boot/{if ((match($4, /^ro/) || match($4, /,ro/)) \ && $2 == "/boot") print "ro"}' /proc/mounts) if [ -n "${boot_opts}" ]; then echo "W: /boot is ro mounted." >&2 echo "W: update-initramfs: Not updating ${initramfs}" >&2 exit 0 fi } get_sorted_versions() { version_list="$( linux-version list | while read -r version; do test -e "${BOOTDIR}/initrd.img-$version" && echo "$version" done | linux-version sort --reverse )" verbose "Available versions: ${version_list}" } set_current_version() { if [ -f "/boot/initrd.img-$(uname -r)" ]; then version=$(uname -r) fi } set_linked_version() { linktarget= if [ -e /initrd.img ] && [ -L /initrd.img ]; then linktarget="$(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="${linktarget##initrd.img-}" } set_highest_version() { get_sorted_versions if [ -z "${version_list}" ]; then version= return fi # shellcheck disable=SC2086 set -- ${version_list} version=${1} } create() { if [ -z "${version}" ]; then usage_error "Create mode requires a version argument" fi set_initramfs generate_initramfs run_bootloader } update() { if [ "${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 backup_initramfs generate_initramfs run_bootloader backup_booted_initramfs } delete() { if [ -z "${version}" ]; then usage_error "Delete mode requires a version argument" fi set_initramfs echo "update-initramfs: Deleting ${initramfs}" rm -f "${initramfs}" "${initramfs}.bak" } # Defaults verbose=0 ## OPTIONS=$(getopt -o "k:cudvtb:h?" --long help -n "$0" -- "$@") || usage_error eval set -- "$OPTIONS" while true; do case "$1" in -k) version="$2" shift 2 ;; -c) mode="c" shift ;; -d) mode="d" shift ;; -u) mode="u" shift ;; -v) verbose="1" shift ;; -t) # accepted for compatibility, but ignored shift ;; -b) BOOTDIR="$2" if [ ! -d "${BOOTDIR}" ]; then echo "E: ${BOOTDIR} is not a directory." >&2 exit 1 fi shift 2 ;; -h|-\?|--help) usage exit 0 ;; --) shift break ;; esac done if [ $# -ne 0 ]; then printf "Extra argument '%s'\\n\\n" "$1" >&2 usage_error fi # Validate arguments if [ -z "${mode}" ]; then usage_error "You must specify at least one of -c, -u, or -d." fi if [ "${version}" = "all" ] \ || { [ "${update_initramfs}" = "all" ] && [ -z "${version}" ]; }; then case "${mode}" in c) version_list="$(linux-version list)" ;; d | u) get_sorted_versions ;; esac if [ -z "${version_list}" ]; then verbose "Nothing to do, exiting." exit 0 fi OPTS="-b ${BOOTDIR}" if [ "${verbose}" = "1" ]; then OPTS="${OPTS} -v" fi for u_version in ${version_list}; do verbose "Execute: ${0} -${mode} -k \"${u_version}\" ${OPTS}" # shellcheck disable=SC2086 "${0}" -${mode} -k "${u_version}" ${OPTS} done exit 0 fi case "${mode}" in c) create ;; d) delete ;; u) update ;; esac