351 lines
8.2 KiB
Bash
Executable file
351 lines
8.2 KiB
Bash
Executable file
#!/bin/sh
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umask 0022
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export PATH='/usr/bin:/sbin:/bin'
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# Defaults
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keep="n"
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CONFDIR="${ROOTDIR}/etc/initramfs-tools"
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verbose="n"
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OPTIONS=`getopt -o c:d:ko:r:v -n "$0" -- "$@"`
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# Check for non-GNU getopt
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if [ $? != 0 ] ; then echo "W: non-GNU getopt" >&2 ; exit 1 ; fi
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eval set -- "$OPTIONS"
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while true; do
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case "$1" in
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-c)
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compress="$2"
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shift 2
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;;
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-d)
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CONFDIR="$2"
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shift 2
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if [ ! -d "${CONFDIR}" ]; then
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echo "${0}: ${CONFDIR}: Not a directory" >&2
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exit 1
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fi
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;;
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-o)
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outfile="$2"
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shift 2
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;;
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-k)
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keep="y"
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shift
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;;
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-r)
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ROOT="$2"
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shift 2
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;;
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-v)
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verbose="y"
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shift
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;;
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--)
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shift
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break
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;;
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*)
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echo "Internal error!" >&2
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exit 1
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;;
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esac
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done
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# For dependency ordered mkinitramfs hook scripts.
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. ${ROOTDIR}/usr/share/initramfs-tools/scripts/functions
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. ${ROOTDIR}/usr/share/initramfs-tools/hook-functions
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. "${CONFDIR}/initramfs.conf"
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EXTRA_CONF=''
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for i in ${ROOTDIR}/usr/share/initramfs-tools/conf.d/* ${CONFDIR}/conf.d/*; do
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[ -e $i ] && EXTRA_CONF="${EXTRA_CONF} $(basename $i \
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| grep '^[[:alnum:]][[:alnum:]\._-]*$' | grep -v '\.dpkg-.*$')";
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done
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# FIXME: deprecated those settings on mkinitramfs run
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# these conf dirs are for boot scripts and land on initramfs
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for i in ${EXTRA_CONF}; do
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if [ -e ${CONFDIR}/conf.d/${i} ]; then
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. ${CONFDIR}/conf.d/${i}
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elif [ -e ${ROOTDIR}/usr/share/initramfs-tools/conf.d/${i} ]; then
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. ${ROOTDIR}/usr/share/initramfs-tools/conf.d/${i}
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fi
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done
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# source package confs
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for i in ${ROOTDIR}/usr/share/initramfs-tools/conf-hooks.d/*; do
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if [ -e "${i}" ]; then
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. "${i}"
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fi
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done
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if [ -n "${UMASK:-}" ]; then
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umask "${UMASK}"
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fi
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if [ -z "${outfile}" ]; then
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usage
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fi
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touch "$outfile"
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outfile="$(readlink -f "$outfile")"
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# And by "version" we really mean path to kernel modules
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# This is braindead, and exists to preserve the interface with mkinitrd
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if [ ${#} -ne 1 ]; then
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version="$(uname -r)"
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else
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version="${1}"
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fi
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# Check that we're using a new enough kernel version, first for ourselves,
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# then for each of the hooks, which can have a MINKVER variable defined
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check_minkver ${version}
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check_minkver ${version} ${ROOTDIR}/usr/share/initramfs-tools/hooks
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check_minkver ${version} ${CONFDIR}/hooks
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case "${version}" in
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/lib/modules/*/[!/]*)
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;;
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/lib/modules/[!/]*)
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version="${version#/lib/modules/}"
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version="${version%%/*}"
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;;
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esac
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case "${version}" in
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*/*)
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echo "$PROG: ${version} is not a valid kernel version" >&2
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exit 1
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;;
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esac
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# Check userspace and kernel support for compressed initramfs images
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if [ -z "${compress:-}" ]; then
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compress=${COMPRESS}
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else
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COMPRESS=${compress}
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fi
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if ! command -v "${compress}" >/dev/null 2>&1; then
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compress=gzip
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[ "${verbose}" = y ] && \
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echo "No ${COMPRESS} in ${PATH}, using gzip"
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COMPRESS=gzip
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fi
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if ! `grep -q -i ^config_rd_${COMPRESS%p} /boot/config-${version}` ; then
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compress=gzip
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[ "${verbose}" = y ] && \
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echo "linux-2.6 misses ${COMPRESS} support, using gzip"
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fi
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# Always compress with best compression mode to save space.
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[ "$compress" = xz ] && compress="xz --check=crc32"
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compress="$compress -9"
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if [ -d "${outfile}" ]; then
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echo "${outfile} is a directory" >&2
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exit 1
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fi
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MODULESDIR="/lib/modules/${version}"
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if [ ! -e "${ROOTDIR}${MODULESDIR}" ]; then
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echo "WARNING: missing ${MODULESDIR}"
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echo "Device driver support needs thus be built-in linux image!"
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fi
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if [ ! -e "${ROOTDIR}${MODULESDIR}/modules.dep" ]; then
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depmod ${version}
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fi
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DESTDIR="$(mktemp -d ${TMPDIR:-/tmp}/mkinitramfs_XXXXXX)" || exit 1
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chmod 755 "${DESTDIR}"
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# do not execute cache_run_scripts() if mounted with noexec
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NOEXEC=""
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if [ -r ${ROOTDIR}/etc/mtab ]; then
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fs=$(df -P $DESTDIR | tail -1 | awk '{print $6}')
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if [ -n "$fs" ] && mount | grep -q "on $fs .*noexec" ; then
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NOEXEC=1
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fi
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fi
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__TMPCPIOGZ="$(mktemp ${TMPDIR:-/tmp}/mkinitramfs-OL_XXXXXX)" || exit 1
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DPKG_ARCH=`uname -m`
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# Export environment for hook scripts.
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#
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export MODULESDIR
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export version
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export CONFDIR
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export DESTDIR
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export DPKG_ARCH
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export verbose
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export KEYMAP
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export MODULES
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# Private, used by 'catenate_cpiogz'.
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export __TMPCPIOGZ
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for d in bin conf/conf.d etc lib/modules run sbin scripts ${MODULESDIR}; do
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mkdir -p "${DESTDIR}/${d}"
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done
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# Copy the modules.order file in
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if [ -f "${ROOTDIR}${MODULESDIR}/modules.order" ]; then
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cp -p "${ROOTDIR}${MODULESDIR}/modules.order" \
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"${DESTDIR}${MODULESDIR}/modules.order"
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fi
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# MODULES=list case. Always honour.
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for x in "${CONFDIR}/modules" ${ROOTDIR}/usr/share/initramfs-tools/modules.d/*; do
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if [ -f "${x}" ]; then
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add_modules_from_file "${x}"
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fi
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done
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# MODULES=most is default
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case "${MODULES}" in
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dep)
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dep_add_modules
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;;
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most)
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auto_add_modules
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;;
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netboot)
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auto_add_modules base
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auto_add_modules net
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;;
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list)
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# nothing to add
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;;
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*)
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echo "W: mkinitramfs: unsupported MODULES setting: ${MODULES}."
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echo "W: mkinitramfs: Falling back to MODULES=most."
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auto_add_modules
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;;
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esac
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# Resolve hidden dependencies
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hidden_dep_add_modules
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# Have to do each file, because cpio --dereference doesn't recurse down
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# symlinks.
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cp -p ${ROOTDIR}/usr/share/initramfs-tools/init ${DESTDIR}/init
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# add existant boot scripts
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for b in $(cd ${ROOTDIR}/usr/share/initramfs-tools/scripts/ && find -L . \
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-regextype posix-extended -regex '.*/[[:alnum:]\._-]+$' -type f); do
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[ -d "${DESTDIR}/scripts/$(dirname "${b}")" ] \
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|| mkdir -p "${DESTDIR}/scripts/$(dirname "${b}")"
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cp -p "${ROOTDIR}/usr/share/initramfs-tools/scripts/${b}" \
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"${DESTDIR}/scripts/$(dirname "${b}")/"
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done
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for b in $(cd "${CONFDIR}/scripts" && find -L . \
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-regextype posix-extended -regex '.*/[[:alnum:]\._-]+$' -type f); do
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[ -d "${DESTDIR}/scripts/$(dirname "${b}")" ] \
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|| mkdir -p "${DESTDIR}/scripts/$(dirname "${b}")"
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cp -p "${CONFDIR}/scripts/${b}" "${DESTDIR}/scripts/$(dirname "${b}")/"
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done
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cp -p "${CONFDIR}/initramfs.conf" ${DESTDIR}/conf
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for i in ${EXTRA_CONF}; do
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if [ -e "${CONFDIR}/conf.d/${i}" ]; then
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copy_exec "${CONFDIR}/conf.d/${i}" /conf/conf.d
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elif [ -e "${ROOTDIR}/usr/share/initramfs-tools/conf.d/${i}" ]; then
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copy_exec "${ROOTDIR}/usr/share/initramfs-tools/conf.d/${i}" /conf/conf.d
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fi
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done
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# ROOT hardcoding
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if [ -n "${ROOT:-}" ]; then
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echo "ROOT=${ROOT}" > ${DESTDIR}/conf/conf.d/root
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fi
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if ! command -v ldd >/dev/null 2>&1 ; then
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echo "WARNING: no ldd around - install libc-bin" >&2
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exit 1
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fi
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run_scripts ${ROOTDIR}/usr/share/initramfs-tools/hooks
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run_scripts "${CONFDIR}"/hooks
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# cache boot run order
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if [ -n "$NOEXEC" ]; then
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echo "W: TMPDIR is mounted noexec, will not cache run scripts."
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else
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for b in $(cd "${DESTDIR}/scripts" && find . -mindepth 1 -type d); do
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cache_run_scripts "${DESTDIR}" "/scripts/${b#./}"
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done
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fi
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# generate module deps
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depmod -a -b "${DESTDIR}" ${version}
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rm -f "${DESTDIR}/lib/modules/${version}"/modules.*map
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# make sure that library search path is up to date
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cp -ar ${ROOTDIR}/etc/ld.so.conf* "$DESTDIR"/etc/
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if ! ldconfig -r "$DESTDIR" ; then
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[ $(id -u) != "0" ] \
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&& echo "ldconfig might need uid=0 (root) for chroot()" >&2
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fi
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# Apply DSDT to initramfs
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if [ -e "${CONFDIR}/DSDT.aml" ]; then
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copy_exec "${CONFDIR}/DSDT.aml" /
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fi
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# Remove any looping or broken symbolic links, since they break cpio.
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[ "${verbose}" = y ] && xargs_verbose="-t"
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(cd "${DESTDIR}" && find . -type l -printf '%p %Y\n' | sed -n 's/ [LN]$//p' \
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| xargs ${xargs_verbose:-} -rL1 rm -f)
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[ "${verbose}" = y ] && echo "Building cpio ${outfile} initramfs"
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(
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# work around lack of "set -o pipefail" for the following pipe:
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# cd "${DESTDIR}" && find . | cpio --quiet -R 0:0 -o -H newc | gzip >"${outfile}" || exit 1
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exec 3>&1
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eval `
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# http://cfaj.freeshell.org/shell/cus-faq-2.html
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exec 4>&1 >&3 3>&-
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cd "${DESTDIR}"
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{
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find . 4>&-; echo "ec1=$?;" >&4
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} | {
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cpio --quiet -R 0:0 -o -H newc 4>&-; echo "ec2=$?;" >&4
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} | ${compress} >"${outfile}"
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echo "ec3=$?;" >&4
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`
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if [ "$ec1" -ne 0 ]; then
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echo "E: mkinitramfs failure find $ec1 cpio $ec2 $compress $ec3"
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exit "$ec1"
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fi
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if [ "$ec2" -ne 0 ]; then
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echo "E: mkinitramfs failure cpio $ec2 $compress $ec3"
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exit "$ec2"
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fi
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if [ "$ec3" -ne 0 ]; then
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echo "E: mkinitramfs failure $compress $ec3"
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exit "$ec3"
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fi
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) || exit 1
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if [ -s "${__TMPCPIOGZ}" ]; then
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cat "${__TMPCPIOGZ}" >>"${outfile}" || exit 1
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fi
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if [ "${keep}" = "y" ]; then
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echo "Working files in ${DESTDIR} and overlay in ${__TMPCPIOGZ}"
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else
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rm -rf "${DESTDIR}"
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rm -rf "${__TMPCPIOGZ}"
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fi
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exit 0
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