void-packages/srcpkgs/initramfs-tools/files/mkinitramfs
Juan RP 00cfa9ee5f initramfs-tools: added support for bzip2 and lzma compressed initramfs.
By default behaviour hasn't been changed, `gzip'. You can now compress
them with bzip2 or lzma. By default -9 is always used, we are worried
about size here so I don't think it should be tweakable.

A new option for initramfs.conf has been added COMPRESSION_TYPE.

--HG--
extra : convert_revision : 4ad57146dc1b7bee2585c1d4d792b3ea242e1fd3
2010-02-20 04:06:10 +01:00

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Executable file

#!/bin/sh
umask 0022
export PATH='/usr/bin:/sbin:/bin'
# Defaults
keep="n"
CONFDIR="/etc/initramfs-tools"
verbose="n"
errors_to="2>/dev/null"
OPTIONS=`getopt -o d:ko:r:v -n "$0" -- "$@"`
# Check for non-GNU getopt
if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
eval set -- "$OPTIONS"
while true; do
case "$1" in
-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/* ${CONFDIR}/conf.d/*; do
EXTRA_CONF="${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 [ -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
# Handle COMPRESSION_TYPE from initramfs.conf.
compress_cmd_args="-9"
case "${COMPRESSION_TYPE}" in
gzip) compress_cmd=gzip;;
bzip2) compress_cmd=bzip2;;
lzma) compress_cmd=lzma; compress_cmd_args="$compress_cmd_args -c";;
*) compress_cmd=gzip;;
esac
# source package confs
for i in /usr/share/initramfs-tools/conf-hooks.d/*; do
if [ -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
# Check that we're using a new enough kernel version, first for ourselves,
# then for each of the hooks, which can have a MINKVER variable defined
check_minkver ${version}
check_minkver ${version} /usr/share/initramfs-tools/hooks
check_minkver ${version} ${CONFDIR}/hooks
case "${version}" in
/lib/modules/*/[!/]*)
;;
/lib/modules/[!/]*)
version="${version#/lib/modules/}"
version="${version%%/*}"
;;
esac
case "${version}" in
*/*)
echo "$PROG: ${version} is not a valid kernel version" >&2
exit 1
;;
esac
if [ -d "${outfile}" ]; then
echo "${outfile} is a directory"
exit 1
fi
MODULESDIR="/lib/modules/${version}"
if [ ! -e "${MODULESDIR}" ]; then
echo "Cannot find ${MODULESDIR}"
exit 1
fi
if [ ! -e "${MODULESDIR}/modules.dep" ]; then
depmod ${version}
fi
DESTDIR="$(mktemp -t -d mkinitramfs_XXXXXX)" || exit 1
__TMPCPIOGZ="$(mktemp -t mkinitramfs-OL_XXXXXX)" || exit 1
DPKG_ARCH=`uname -m`
# Export environment for hook scripts.
#
export MODULESDIR
export version
export CONFDIR
export DESTDIR
export DPKG_ARCH
export verbose
export KEYMAP
export MODULES
# Private, used by 'catenate_cpiogz'.
export __TMPCPIOGZ
for d in bin conf/conf.d etc lib/modules sbin scripts ${MODULESDIR}; do
mkdir -p "${DESTDIR}/${d}"
done
# Copy the modules.order file in
if [ -f "${MODULESDIR}/modules.order" ]; then
cp -p "${MODULESDIR}/modules.order" \
"${DESTDIR}${MODULESDIR}/modules.order"
fi
# MODULES=list case. Always honour.
for x in "${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 "mkinitramfs: Warning unsupported MODULES setting: ${MODULES}."
echo "mkinitramfs: Falling back to MODULES=most."
auto_add_modules
;;
esac
# Have to do each file, because cpio --dereference doesn't recurse down
# symlinks.
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
[ -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:]_.]+$' -type f); do
[ -d "${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/${i}" ]; then
copy_exec "${CONFDIR}/conf.d/${i}" /conf/conf.d
elif [ -e "/usr/share/initramfs-tools/conf.d/${i}" ]; then
copy_exec "/usr/share/initramfs-tools/conf.d/${i}" /conf/conf.d
fi
done
# ROOT hardcoding
if [ -n "${ROOT}" ]; then
echo "ROOT=${ROOT}" > ${DESTDIR}/conf/conf.d/root
fi
run_scripts /usr/share/initramfs-tools/hooks
run_scripts "${CONFDIR}"/hooks
# Apply DSDT to initramfs
if [ -e "${CONFDIR}/DSDT.aml" ]; then
copy_exec "${CONFDIR}/DSDT.aml" /
fi
# Copy resume from klibc
copy_exec /bin/resume /bin
[ "${verbose}" = y ] && echo "Building cpio ${outfile} initramfs (${COMPRESSION_TYPE})"
(
# work around lack of "set -o pipefail" for the following pipe:
# cd "${DESTDIR}" && find . | cpio --quiet --dereference -o -H newc | gzip >"${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 --dereference -o -H newc 4>&-; echo "ec2=$?;" >&4
} | ${compress_cmd} ${compress_cmd_args} >"${outfile}"
echo "ec3=$?;" >&4
`
if [ "$ec1" -ne 0 ]; then exit "$ec1"; fi
if [ "$ec2" -ne 0 ]; then exit "$ec2"; fi
if [ "$ec3" -ne 0 ]; then exit "$ec3"; fi
) || exit 1
if [ -s "${__TMPCPIOGZ}" ]; then
cat "${__TMPCPIOGZ}" >>"${outfile}" || exit 1
fi
if [ "${keep}" = "y" ]; then
echo "Working files in ${DESTDIR} and overlay in ${__TMPCPIOGZ}"
else
rm -rf "${DESTDIR}"
rm -rf "${__TMPCPIOGZ}"
fi
exit 0