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#!/bin/sh umask 0022 export PATH='/usr/bin:/sbin:/bin' # Defaults keep="n" CONFDIR="/etc/initramfs-tools" verbose="n" test -e /bin/busybox && BUSYBOXDIR=/bin test -e /usr/lib/initramfs-tools/bin/busybox && BUSYBOXDIR=/usr/lib/initramfs-tools/bin export BUSYBOXDIR OPTIONS=`getopt -o c:d:ko:r:v -n "$0" -- "$@"` # Check for non-GNU getopt if [ $? != 0 ] ; then echo "W: non-GNU getopt" >&2 ; exit 1 ; fi eval set -- "$OPTIONS" while true; do case "$1" in -c) compress="$2" shift 2 ;; -d) CONFDIR="$2" shift 2 if [ ! -d "${CONFDIR}" ]; then echo "${0}: ${CONFDIR}: Not a directory" >&2 exit 1 fi ;; -o) outfile="$2" shift 2 ;; -k) keep="y" shift ;; -r) ROOT="$2" shift 2 ;; -v) verbose="y" shift ;; --) shift break ;; *) echo "Internal error!" >&2 exit 1 ;; esac done # For dependency ordered mkinitramfs hook scripts. . /usr/share/initramfs-tools/scripts/functions . /usr/share/initramfs-tools/hook-functions . "${CONFDIR}/initramfs.conf" EXTRA_CONF='' for i in /usr/share/initramfs-tools/conf.d/* ${CONFDIR}/conf.d/*; do [ -e $i ] && EXTRA_CONF="${EXTRA_CONF} $(basename $i \ | grep '^[[:alnum:]][[:alnum:]\._-]*$' | grep -v '\.dpkg-.*$')"; done # FIXME: deprecated those settings on mkinitramfs run # these conf dirs are for boot scripts and land on initramfs for i in ${EXTRA_CONF}; do if [ -d ${CONFDIR}/conf.d/${i} ]; then echo "Warning: ${CONFDIR}/conf.d/${i} is a directory instead of file, ignoring." elif [ -e ${CONFDIR}/conf.d/${i} ]; then . ${CONFDIR}/conf.d/${i} elif [ -e /usr/share/initramfs-tools/conf.d/${i} ]; then . /usr/share/initramfs-tools/conf.d/${i} fi done # source package confs for i in /usr/share/initramfs-tools/conf-hooks.d/*; do if [ -d "${i}" ]; then echo "Warning: ${i} is a directory instead of file, ignoring." elif [ -e "${i}" ]; then . "${i}" fi done if [ -n "${UMASK:-}" ]; then umask "${UMASK}" fi if [ -z "${outfile}" ]; then usage fi touch "$outfile" outfile="$(readlink -f "$outfile")" # And by "version" we really mean path to kernel modules # This is braindead, and exists to preserve the interface with mkinitrd if [ ${#} -ne 1 ]; then version="$(uname -r)" else version="${1}" fi case "${version}" in /lib/modules/*/[!/]*) ;; /lib/modules/[!/]*) version="${version#/lib/modules/}" version="${version%%/*}" ;; esac case "${version}" in */*) echo "$PROG: ${version} is not a valid kernel version" >&2 exit 1 ;; esac # Check userspace and kernel support for compressed initramfs images if [ -z "${compress:-}" ]; then compress=${COMPRESS} else COMPRESS=${compress} fi if ! command -v "${compress}" >/dev/null 2>&1; then compress=gzip [ "${verbose}" = y ] && \ echo "No ${COMPRESS} in ${PATH}, using gzip" COMPRESS=gzip fi if dpkg --compare-versions "${version}" lt "2.6.38" 2>/dev/null; then compress=gzip [ "${verbose}" = y ] && \ echo "linux-2.6 likely misses ${COMPRESS} support, using gzip" fi [ "${compress}" = lzop ] && compress="lzop -9" [ "${compress}" = xz ] && compress="xz --check=crc32" if [ -d "${outfile}" ]; then echo "${outfile} is a directory" >&2 exit 1 fi MODULESDIR="/lib/modules/${version}" if [ ! -e "${MODULESDIR}" ]; then echo "WARNING: missing ${MODULESDIR}" echo "Ensure all necessary drivers are built into the linux image!" fi if [ ! -e "${MODULESDIR}/modules.dep" ]; then depmod ${version} fi # Prepare to clean up temporary files on exit DESTDIR= __TMPCPIOGZ= __TMPEARLYCPIO= clean_on_exit() { if [ "${keep}" = "y" ]; then echo "Working files in ${DESTDIR:-<not yet created>}, early initramfs in ${__TMPEARLYCPIO:-<not yet created>} and overlay in ${__TMPCPIOGZ:-<not yet created>}" else for path in "${DESTDIR}" "${__TMPCPIOGZ}" "${__TMPEARLYCPIO}"; do test -z "${path}" || rm -rf "${path}" done fi } trap clean_on_exit EXIT trap "exit 1" INT TERM # makes the EXIT trap effective even when killed # Create temporary directory and files for initramfs contents [ -n "${TMPDIR}" ] && [ ! -w "${TMPDIR}" ] && unset TMPDIR DESTDIR="$(mktemp -d ${TMPDIR:-/var/tmp}/mkinitramfs_XXXXXX)" || exit 1 chmod 755 "${DESTDIR}" __TMPCPIOGZ="$(mktemp ${TMPDIR:-/var/tmp}/mkinitramfs-OL_XXXXXX)" || exit 1 __TMPEARLYCPIO="$(mktemp ${TMPDIR:-/var/tmp}/mkinitramfs-FW_XXXXXX)" || exit 1 DPKG_ARCH=`dpkg --print-architecture` # Export environment for hook scripts. # export MODULESDIR export version export CONFDIR export DESTDIR export DPKG_ARCH export verbose export MODULES export BUSYBOX export COMPCACHE_SIZE # Private, used by 'catenate_cpiogz'. export __TMPCPIOGZ # Private, used by 'prepend_earlyinitramfs'. export __TMPEARLYCPIO for d in bin conf/conf.d etc lib/modules run sbin scripts ${MODULESDIR}; do mkdir -p "${DESTDIR}/${d}" done # Copy in modules.builtin and modules.order (not generated by depmod) for x in modules.builtin modules.order; do if [ -f "${MODULESDIR}/${x}" ]; then cp -p "${MODULESDIR}/${x}" "${DESTDIR}${MODULESDIR}/${x}" fi done # MODULES=list case. Always honour. for x in "${CONFDIR}/modules" /usr/share/initramfs-tools/modules.d/*; do if [ -f "${x}" ]; then add_modules_from_file "${x}" fi done # MODULES=most is default case "${MODULES}" in dep) dep_add_modules ;; most) auto_add_modules ;; netboot) auto_add_modules base auto_add_modules net ;; list) # nothing to add ;; *) echo "W: mkinitramfs: unsupported MODULES setting: ${MODULES}." echo "W: mkinitramfs: Falling back to MODULES=most." auto_add_modules ;; esac # Resolve hidden dependencies hidden_dep_add_modules # First file executed by linux cp -p /usr/share/initramfs-tools/init ${DESTDIR}/init # add existant boot scripts for b in $(cd /usr/share/initramfs-tools/scripts/ && find . \ -regextype posix-extended -regex '.*/[[:alnum:]\._-]+$' -type f); do option=$(sed '/^OPTION=/!d;$d;s/^OPTION=//;s/[[:space:]]*$//' "/usr/share/initramfs-tools/scripts/${b}") [ -z "${option}" ] || eval test -n \"\${$option}\" -a \"\${$option}\" != \"n\" || continue [ -d "${DESTDIR}/scripts/$(dirname "${b}")" ] \ || mkdir -p "${DESTDIR}/scripts/$(dirname "${b}")" cp -p "/usr/share/initramfs-tools/scripts/${b}" \ "${DESTDIR}/scripts/$(dirname "${b}")/" done for b in $(cd "${CONFDIR}/scripts" && find . \ -regextype posix-extended -regex '.*/[[:alnum:]\._-]+$' -type f); do option=$(sed '/^OPTION=/!d;$d;s/^OPTION=//;s/[[:space:]]*$//' "${CONFDIR}/scripts/${b}") [ -z "${option}" ] || eval test -n \"\${$option}\" -a \"\${$option}\" != \"n\" || continue [ -d "${DESTDIR}/scripts/$(dirname "${b}")" ] \ || mkdir -p "${DESTDIR}/scripts/$(dirname "${b}")" cp -p "${CONFDIR}/scripts/${b}" "${DESTDIR}/scripts/$(dirname "${b}")/" done echo "DPKG_ARCH=${DPKG_ARCH}" > ${DESTDIR}/conf/arch.conf cp -p "${CONFDIR}/initramfs.conf" ${DESTDIR}/conf for i in ${EXTRA_CONF}; do if [ -e "${CONFDIR}/conf.d/${i}" ]; then copy_file config "${CONFDIR}/conf.d/${i}" /conf/conf.d elif [ -e "/usr/share/initramfs-tools/conf.d/${i}" ]; then copy_file config "/usr/share/initramfs-tools/conf.d/${i}" \ /conf/conf.d fi done # ROOT hardcoding if [ -n "${ROOT:-}" ]; then echo "ROOT=${ROOT}" > ${DESTDIR}/conf/conf.d/root fi if ! command -v ldd >/dev/null 2>&1 ; then echo "WARNING: no ldd around - install libc-bin" >&2 exit 1 fi # fstab and mtab touch "${DESTDIR}/etc/fstab" ln -s /proc/mounts "${DESTDIR}/etc/mtab" # install wait-for-root binary. copy_exec /usr/lib/initramfs-tools/bin/wait-for-root /sbin # module-init-tools copy_exec /sbin/modprobe /sbin copy_exec /sbin/rmmod /sbin mkdir -p "${DESTDIR}/etc/modprobe.d" cp -a /etc/modprobe.d/* "${DESTDIR}/etc/modprobe.d/" # workaround: libgcc always needed on old-abi arm if [ "$DPKG_ARCH" = arm ] || [ "$DPKG_ARCH" = armeb ]; then cp -a /lib/libgcc_s.so.1 "${DESTDIR}/lib/" fi run_scripts_optional /usr/share/initramfs-tools/hooks run_scripts_optional "${CONFDIR}"/hooks # cache boot run order for b in $(cd "${DESTDIR}/scripts" && find . -mindepth 1 -type d); do cache_run_scripts "${DESTDIR}" "/scripts/${b#./}" done # generate module deps depmod -a -b "${DESTDIR}" ${version} rm -f "${DESTDIR}/lib/modules/${version}"/modules.*map # make sure that library search path is up to date cp -ar /etc/ld.so.conf* "$DESTDIR"/etc/ if ! ldconfig -r "$DESTDIR" ; then [ $(id -u) != "0" ] \ && echo "ldconfig might need uid=0 (root) for chroot()" >&2 fi # Apply DSDT to initramfs if [ -e "${CONFDIR}/DSDT.aml" ]; then copy_file DSDT "${CONFDIR}/DSDT.aml" fi # Make sure there is a final sh in initramfs if [ ! -e "${DESTDIR}/bin/sh" ]; then copy_exec /bin/sh "${DESTDIR}/bin/" fi # Remove any looping or broken symbolic links, since they break cpio. [ "${verbose}" = y ] && xargs_verbose="-t" (cd "${DESTDIR}" && find . -type l -printf '%p %Y\n' | sed -n 's/ [LN]$//p' \ | xargs ${xargs_verbose:-} -rL1 rm -f) # dirty hack for armhf's double-linker situation; if we have one of # the two known eglibc linkers, nuke both and re-create sanity if [ "$DPKG_ARCH" = armhf ]; then if [ -e "${DESTDIR}/lib/arm-linux-gnueabihf/ld-linux.so.3" ] || \ [ -e "${DESTDIR}/lib/ld-linux-armhf.so.3" ]; then rm -f "${DESTDIR}/lib/arm-linux-gnueabihf/ld-linux.so.3" rm -f "${DESTDIR}/lib/ld-linux-armhf.so.3" cp -aL /lib/ld-linux-armhf.so.3 "${DESTDIR}/lib/" ln -sf /lib/ld-linux-armhf.so.3 "${DESTDIR}/lib/arm-linux-gnueabihf/ld-linux.so.3" fi fi [ "${verbose}" = y ] && echo "Building cpio ${outfile} initramfs" if [ -s "${__TMPEARLYCPIO}" ]; then cat "${__TMPEARLYCPIO}" >"${outfile}" || exit 1 else # truncate > "${outfile}" fi ( # preserve permissions if root builds the image, see #633582 [ "$(id -ru)" != 0 ] && cpio_owner_root="-R 0:0" # work around lack of "set -o pipefail" for the following pipe: # cd "${DESTDIR}" && find . | cpio --quiet $cpio_owner_root -o -H newc | gzip >>"${outfile}" || exit 1 exec 3>&1 eval ` # http://cfaj.freeshell.org/shell/cus-faq-2.html exec 4>&1 >&3 3>&- cd "${DESTDIR}" { find . 4>&-; echo "ec1=$?;" >&4 } | { cpio --quiet $cpio_owner_root -o -H newc 4>&-; echo "ec2=$?;" >&4 } | ${compress} >>"${outfile}" echo "ec3=$?;" >&4 ` if [ "$ec1" -ne 0 ]; then echo "E: mkinitramfs failure find $ec1 cpio $ec2 $compress $ec3" exit "$ec1" fi if [ "$ec2" -ne 0 ]; then echo "E: mkinitramfs failure cpio $ec2 $compress $ec3" exit "$ec2" fi if [ "$ec3" -ne 0 ]; then echo "E: mkinitramfs failure $compress $ec3" exit "$ec3" fi ) || exit 1 if [ -s "${__TMPCPIOGZ}" ]; then cat "${__TMPCPIOGZ}" >>"${outfile}" || exit 1 fi exit 0