285 lines
6.3 KiB
Bash
Executable File
285 lines
6.3 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="/etc/initramfs-tools"
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verbose="n"
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errors_to="2>/dev/null"
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OPTIONS=`getopt -o d:ko:r:v -n "$0" -- "$@"`
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# Check for non-GNU getopt
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if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
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eval set -- "$OPTIONS"
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while true; do
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case "$1" in
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-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="$2"
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shift 2
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;;
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-v)
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verbose="y"
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shift
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;;
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--)
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shift
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break
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;;
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*)
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echo "Internal error!" >&2
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exit 1
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;;
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esac
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done
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# For dependency ordered mkinitramfs hook scripts.
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. /usr/share/initramfs-tools/scripts/functions
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. /usr/share/initramfs-tools/hook-functions
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. "${CONFDIR}/initramfs.conf"
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EXTRA_CONF=''
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for i in /usr/share/initramfs-tools/conf.d/* ${CONFDIR}/conf.d/*; do
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EXTRA_CONF="${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 /usr/share/initramfs-tools/conf.d/${i} ]; then
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. /usr/share/initramfs-tools/conf.d/${i}
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fi
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done
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# Handle COMPRESSION_TYPE from initramfs.conf.
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compress_cmd_args="-9"
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case "${COMPRESSION_TYPE}" in
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gzip) compress_cmd=gzip;;
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bzip2) compress_cmd=bzip2;;
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lzma) compress_cmd=lzma; compress_cmd_args="$compress_cmd_args -c";;
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*) compress_cmd=gzip;;
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esac
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# source package confs
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for i in /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} /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: ${version} is not a valid kernel version" >&2
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exit 1
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;;
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esac
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if [ -d "${outfile}" ]; then
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echo "${outfile} is a directory"
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exit 1
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fi
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MODULESDIR="/lib/modules/${version}"
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if [ ! -e "${MODULESDIR}" ]; then
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echo "Cannot find ${MODULESDIR}"
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exit 1
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fi
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if [ ! -e "${MODULESDIR}/modules.dep" ]; then
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depmod ${version}
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fi
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DESTDIR="$(mktemp -t -d mkinitramfs_XXXXXX)" || exit 1
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__TMPCPIOGZ="$(mktemp -t 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 sbin scripts ${MODULESDIR}; do
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mkdir -p "${DESTDIR}/${d}"
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done
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# Copy the modules.order file in
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if [ -f "${MODULESDIR}/modules.order" ]; then
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cp -p "${MODULESDIR}/modules.order" \
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"${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" /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 "mkinitramfs: Warning unsupported MODULES setting: ${MODULES}."
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echo "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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# Have to do each file, because cpio --dereference doesn't recurse down
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# symlinks.
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cp -p /usr/share/initramfs-tools/init ${DESTDIR}/init
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# add existant boot scripts
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for b in $(cd /usr/share/initramfs-tools/scripts/ && find . \
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-regextype posix-extended -regex '.*/[[:alnum:]_.]+$' -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 "/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 . \
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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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echo "DPKG_ARCH=${DPKG_ARCH}" > ${DESTDIR}/conf/arch.conf
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cp -p "${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/${i}" /conf/conf.d
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elif [ -e "/usr/share/initramfs-tools/conf.d/${i}" ]; then
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copy_exec "/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}" > ${DESTDIR}/conf/conf.d/root
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fi
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run_scripts /usr/share/initramfs-tools/hooks
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run_scripts "${CONFDIR}"/hooks
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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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# Copy resume from klibc
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copy_exec /bin/resume /bin
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[ "${verbose}" = y ] && echo "Building cpio ${outfile} initramfs (${COMPRESSION_TYPE})"
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(
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# work around lack of "set -o pipefail" for the following pipe:
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# cd "${DESTDIR}" && find . | cpio --quiet --dereference -o -H newc | gzip >"${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 --dereference -o -H newc 4>&-; echo "ec2=$?;" >&4
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} | ${compress_cmd} ${compress_cmd_args} >"${outfile}"
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echo "ec3=$?;" >&4
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`
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if [ "$ec1" -ne 0 ]; then exit "$ec1"; fi
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if [ "$ec2" -ne 0 ]; then exit "$ec2"; fi
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if [ "$ec3" -ne 0 ]; then exit "$ec3"; fi
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) || exit 1
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if [ -s "${__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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