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|
#!/bin/sh
# Takes a file containing a list of modules to be added as an
# argument, figures out dependancies, and adds them.
#
# Input file syntax:
#
# # comment
# modprobe_module_name [args ...]
# [...]
#
manual_add_modules()
{
# Sanity check
if [ ! -e ${1} ]; then
return
fi
sed -e '/^#/d' ${1} | while read module rest; do
for y in $(modprobe --set-version=${version} --show-depends ${module} | awk '{ print $2 }'); do
# Prune duplicates
if [ -e ${DESTDIR}/${y} ]; then
continue
fi
mkdir -p ${DESTDIR}/$(dirname ${y})
ln -s ${y} ${DESTDIR}/$(dirname ${y})
echo $(basename ${y} .ko) "${rest}" >>${DESTDIR}/conf/modules
done
done
}
# Copy entire subtrees to the initramfs
copy_modules_dir()
{
tmpdir_modbase=${DESTDIR}/lib/modules/${version}
mkdir -p $(dirname ${tmpdir_modbase}/${1})
cp -a /lib/modules/${version}/${1} ${tmpdir_modbase}/${1}
}
# Modules that we always add to the initramfs
auto_add_modules()
{
copy_modules_dir kernel/drivers/net
copy_modules_dir kernel/drivers/scsi
copy_modules_dir kernel/drivers/ide
copy_modules_dir kernel/drivers/md
copy_modules_dir kernel/drivers/usb
copy_modules_dir kernel/drivers/block
copy_modules_dir kernel/drivers/input
copy_modules_dir kernel/fs/ext2
copy_modules_dir kernel/fs/ext3
copy_modules_dir kernel/fs/isofs
copy_modules_dir kernel/fs/jbd
copy_modules_dir kernel/fs/jfs
copy_modules_dir kernel/fs/nfs
copy_modules_dir kernel/fs/reiserfs
copy_modules_dir kernel/fs/xfs
# These aren't caught by the above but really need to be there:
for x in mbcache nfs af_packet raid1 ide-cd ide-disk ide-generic; do
for y in $(modprobe --set-version=${version} --show-depends ${x} | awk '{ print $2 }'); do
# Prune duplicates
if [ -e ${DESTDIR}/${y} ]; then
continue
fi
mkdir -p ${DESTDIR}/$(dirname ${y})
ln -s ${y} ${DESTDIR}/$(dirname ${y})
depmod -b ${DESTDIR} ${version}
done
done
}
usage()
{
cat >&2 << EOF
Usage: ${0} [OPTION]... <-o outfile> [version]
Options:
-d confdir Specify an alternative configuration directory.
-k Keep temporary directory used to make the image.
-o outfile Write to outfile.
-r root Override ROOT setting in mkinitrd.conf.
See ${0}(8) for further details.
EOF
exit 1
}
# Defaults
keep="n"
CONFDIR="/etc/mkinitramfs"
verbose="n"
errors_to="2>/dev/null"
while getopts "d:ko:r:" flag; do
case $flag in
d)
CONFDIR="${OPTAGS}"
if [ ! d "${CONFDIR}" ]; then
echo "${0}: ${CONFDIR}: Not a directory" >&2
exit 1
fi
;;
o)
outfile="${OPTARG}"
;;
k)
keep="y"
;;
esac
done
shift $((${OPTIND} - 1))
# For dependency ordered mkinitramfs hook scripts.
. /usr/share/initramfs-tools/scripts/functions
. ${CONFDIR}/initramfs.conf
if [ x${outfile} = x ]; then
usage
fi
# 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
if [ -d ${outfile} ]; then
echo "${outfile} is a directory"
exit 1
fi
if [ ! -e /lib/modules/${version} ]; then
echo "Cannot find /lib/modules/${version}"
exit 1
fi
DESTDIR=$(mktemp -t -d mkinitramfs_XXXXXX) || exit 1
__TMPCPIOGZ=$(mktemp -t mkinitramfs-OL_XXXXXX) || exit 1
# Export environment for hook scripts.
#
export version
export CONFDIR
export DESTDIR
# Private, used by 'catenate_cpiogz'.
export __TMPCPIOGZ
for d in bin conf etc lib modules sbin scripts; do
mkdir -p ${DESTDIR}/${d}
done
for x in ${CONFDIR}/modules /usr/share/initramfs-tools/modules.d/*; do
manual_add_modules ${x}
done
auto_add_modules
# Have to do each file, because cpio --dereference doesn't recurse down
# symlinks.
ln -s /usr/lib/klibc/bin/* ${DESTDIR}/bin
ln -s /usr/lib/klibc/lib/* ${DESTDIR}/lib
ln -s /usr/share/initramfs-tools/init ${DESTDIR}/init
cp -a /usr/share/initramfs-tools/scripts/* ${DESTDIR}/scripts
ln -s ${CONFDIR}/initramfs.conf ${DESTDIR}/conf
ln -s /etc/udev ${DESTDIR}/etc
# Hack until udev is built with klibc
ln -s /sbin/udev ${DESTDIR}/bin
ln -s /sbin/udevstart ${DESTDIR}/bin
ln -s /lib/libc.so.* ${DESTDIR}/lib
ln -s /lib/ld*.so.* ${DESTDIR}/lib
rm ${DESTDIR}/lib/*lsb*
# Busybox
rm ${DESTDIR}/bin/sh
ln -s /usr/lib/initramfs-tools/bin/busybox ${DESTDIR}/bin/sh
# This is ugly, but needed atm to make the builtins work =(
ln -s /usr/lib/initramfs-tools/bin/busybox ${DESTDIR}/bin/busybox
# Modutils
ln -s /sbin/modprobe ${DESTDIR}/sbin
ln -s /sbin/depmod ${DESTDIR}/sbin
ln -s /sbin/rmmod ${DESTDIR}/sbin
mkdir -p ${DESTDIR}/etc/modprobe.d
ln -s /etc/modprobe.d/aliases ${DESTDIR}/etc/modprobe.d
# Raid
ln -s /sbin/mdadm ${DESTDIR}/sbin
ln -s /sbin/mdrun ${DESTDIR}/sbin
run_scripts /usr/share/initramfs-tools/hooks
run_scripts /etc/mkinitramfs/hooks
(cd ${DESTDIR} && find . | cpio --quiet --dereference -o -H newc | gzip -9 >${outfile})
if [ -s ${__TMPCPIOGZ} ]; then
cat ${__TMPCPIOGZ} >>${outfile}
fi
if [ "${keep}" = "y" ]; then
echo "Working files in ${DESTDIR} and overlay in ${__TMPCPIOGZ}"
else
rm -rf "${DESTDIR}"
rm -rf "${__TMPCPIOGZ}"
fi
exit 0
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