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genkernel_fork/gen_initrd.sh

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#!/bin/bash
# create_initrd_loop(size)
create_initrd_loop() {
local inodes
[ "$#" -ne '1' ] && gen_die 'create_initrd_loop(): Not enough arguments!'
mkdir -p ${TEMP}/initrd-mount ||
gen_die 'Could not create loopback mount directory!'
dd if=/dev/zero of=${TMPDIR}/initrd-${KV} bs=1k count=${1} >> "${LOGFILE}" 2>&1 ||
gen_die "Could not zero initrd-${KV}"
mke2fs -F -N750 -q "${TMPDIR}/initrd-${KV}" >> "${LOGFILE}" 2>&1 ||
gen_die "Could not format initrd-${KV}!"
mount -t ext2 -o loop "${TMPDIR}/initrd-${KV}" "${TEMP}/initrd-mount" >> "${LOGFILE}" 2>&1 ||
gen_die 'Could not mount the initrd filesystem!'
}
create_initrd_unmount_loop() {
cd ${TEMP}
umount "${TEMP}/initrd-mount" ||
gen_die 'Could not unmount initrd system!'
}
move_initrd_to_loop() {
cd "${TEMP}/initrd-temp"
mv * "${TEMP}/initrd-mount" >> ${LOGFILE} 2>&1
}
# check for static linked file with objdump
is_static() {
LANG="C" LC_ALL="C" objdump -T $1 2>&1 | grep "not a dynamic object" > /dev/null
return $?
}
create_base_initrd_sys() {
rm -rf "${TEMP}/initrd-temp" > /dev/null
mkdir -p ${TEMP}/initrd-temp/dev
mkdir -p ${TEMP}/initrd-temp/bin
mkdir -p ${TEMP}/initrd-temp/etc
mkdir -p ${TEMP}/initrd-temp/usr
mkdir -p ${TEMP}/initrd-temp/proc
mkdir -p ${TEMP}/initrd-temp/temp
mkdir -p ${TEMP}/initrd-temp/sys
mkdir -p ${TEMP}/initrd-temp/.initrd
mkdir -p ${TEMP}/initrd-temp/var/lock/dmraid
ln -s bin ${TEMP}/initrd-temp/sbin
ln -s ../bin ${TEMP}/initrd-temp/usr/bin
ln -s ../bin ${TEMP}/initrd-temp/usr/sbin
echo "/dev/ram0 / ext2 defaults 0 0" > ${TEMP}/initrd-temp/etc/fstab
echo "proc /proc proc defaults 0 0" >> ${TEMP}/initrd-temp/etc/fstab
if [ "${NODEVFSD}" = '' ]
then
echo "REGISTER .* MKOLDCOMPAT" > ${TEMP}/initrd-temp/etc/devfsd.conf
echo "UNREGISTER .* RMOLDCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
echo "REGISTER .* MKNEWCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
echo "UNREGISTER .* RMNEWCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
fi
# SGI LiveCDs need the following binary (no better place for it than here)
# getdvhoff is a DEPEND of genkernel, so it *should* exist
if [ ${BUILD_INITRAMFS} -eq '1' ]
then
[ -e /usr/lib/getdvhoff/getdvhoff ] \
&& cp /usr/lib/getdvhoff/getdvhoff ${TEMP}/initrd-temp/bin \
|| gen_die "sys-boot/getdvhoff not merged!"
fi
cd ${TEMP}/initrd-temp/dev
MAKEDEV std
MAKEDEV console
if [ "${DISKLABEL}" -eq '1' ]; then
cp "${BLKID_BINCACHE}" "${TEMP}/initrd-temp/bin/blkid.bz2" ||
gen_die 'Could not copy blkid from bincache!'
bunzip2 "${TEMP}/initrd-temp/bin/blkid.bz2" ||
gen_die 'Could not uncompress blkid!'
chmod +x "${TEMP}/initrd-temp/bin/blkid"
fi
cp "${BUSYBOX_BINCACHE}" "${TEMP}/initrd-temp/bin/busybox.tar.bz2" ||
gen_die 'Could not copy busybox from bincache!'
tar -xjf "${TEMP}/initrd-temp/bin/busybox.tar.bz2" -C "${TEMP}/initrd-temp/bin" busybox ||
gen_die 'Could not extract busybox bincache!'
chmod +x "${TEMP}/initrd-temp/bin/busybox"
# devfsd
if [ "${KERN_24}" -eq '1' ]
then
cp "${DEVFSD_BINCACHE}" "${TEMP}/initrd-temp/bin/devfsd.bz2" || gen_die 'Could not copy devfsd executable from bincache!'
bunzip2 "${TEMP}/initrd-temp/bin/devfsd.bz2" || gen_die 'Could not uncompress devfsd!'
chmod +x "${TEMP}/initrd-temp/bin/devfsd"
fi
#unionfs modules
if [ "${UNIONFS}" -eq '1' ]
then
print_info 1 'UNIONFS MODULES: Adding support (compiling)...'
compile_unionfs_modules
/bin/tar -jxpf "${UNIONFS_MODULES_BINCACHE}" -C "${TEMP}/initrd-temp" ||
gen_die "Could not extract unionfs modules binary cache!";
fi
#unionfs utils
if [ "${UNIONFS}" -eq '1' ]
then
print_info 1 'UNIONFS TOOLS: Adding support (compiling)...'
compile_unionfs_utils
/bin/tar -jxpf "${UNIONFS_BINCACHE}" -C "${TEMP}/initrd-temp" ||
gen_die "Could not extract unionfs tools binary cache!";
fi
# DMRAID
if [ "${DMRAID}" -eq '1' ]
then
print_info 1 'DMRAID: Adding support (compiling binaries)...'
compile_dmraid
/bin/tar -jxpf "${DMRAID_BINCACHE}" -C "${TEMP}/initrd-temp" ||
gen_die "Could not extract dmraid binary cache!";
fi
# LVM
if [ "${LVM}" -eq '1' ]
then
if [ -e '/sbin/lvm' ] && LC_ALL="C" ldd /sbin/lvm|grep -q 'not a dynamic executable';
then
print_info 1 'LVM: Adding support (using local static binaries)...'
cp /sbin/lvm "${TEMP}/initrd-temp/bin/lvm" ||
gen_die 'Could not copy over lvm!'
else
print_info 1 'LVM: Adding support (compiling binaries)...'
compile_lvm
/bin/tar -jxpf "${LVM_BINCACHE}" -C "${TEMP}/initrd-temp" ||
gen_die "Could not extract lvm binary cache!";
mv ${TEMP}/initrd-temp/bin/lvm.static ${TEMP}/initrd-temp/bin/lvm ||
gen_die 'LVM error: Could not move lvm.static to lvm!'
fi
for i in vgchange vgscan; do
ln ${TEMP}/initrd-temp/bin/lvm ${TEMP}/initrd-temp/bin/$i ||
gen_die "LVM error: Could not link ${i}!"
done
mkdir -p ${TEMP}/initrd-temp/etc/lvm
if [ -x /sbin/lvm ]
then
# lvm dumpconfig 2>&1 > /dev/null || gen_die 'Could not copy over lvm.conf!'
# ret=$?
# if [ ${ret} != 0 ]
# then
cp /etc/lvm/lvm.conf "${TEMP}/initrd-temp/etc/lvm/" ||
gen_die 'Could not copy over lvm.conf!'
# else
# gen_die 'Could not copy over lvm.conf!'
# fi
fi
fi
# EVMS
if [ "${EVMS}" -eq '1' ]
then
if [ -e '/sbin/evms_activate' ]
then
print_info 1 'EVMS: Adding support...'
mkdir -p ${TEMP}/initrd-temp/lib
mkdir -p ${TEMP}/initrd-temp/sbin
mkdir -p ${TEMP}/initrd-temp/etc
mkdir -p ${TEMP}/initrd-temp/bin
cp -a /lib/ld-* "${TEMP}/initrd-temp/lib" \
|| gen_die 'Could not copy files for EVMS!'
if [ -n "`ls /lib/libgcc_s*`" ]
then
cp -a /lib/libgcc_s* "${TEMP}/initrd-temp/lib" \
|| gen_die 'Could not copy files for EVMS!'
fi
cp -a /lib/libc-* /lib/libc.* "${TEMP}/initrd-temp/lib" \
|| gen_die 'Could not copy files for EVMS!'
cp -a /lib/libdl-* /lib/libdl.* "${TEMP}/initrd-temp/lib" \
|| gen_die 'Could not copy files for EVMS!'
cp -a /lib/libpthread* "${TEMP}/initrd-temp/lib" \
|| gen_die 'Could not copy files for EVMS!'
cp -a /lib/libuuid*so* "${TEMP}/initrd-temp/lib" \
|| gen_die 'Could not copy files for EVMS!'
cp -a /lib/libevms*so* "${TEMP}/initrd-temp/lib" \
|| gen_die 'Could not copy files for EVMS!'
cp -a /lib/evms "${TEMP}/initrd-temp/lib" \
|| gen_die 'Could not copy files for EVMS!'
cp -a /lib/evms/* "${TEMP}/initrd-temp/lib/evms" \
|| gen_die 'Could not copy files for EVMS!'
cp -a /etc/evms.conf "${TEMP}/initrd-temp/etc" \
|| gen_die 'Could not copy files for EVMS!'
cp /sbin/evms_activate "${TEMP}/initrd-temp/sbin" \
|| gen_die 'Could not copy over evms_activate!'
# Fix EVMS complaining that it cant find the swap utilities.
# These are not required in the initrd
for swap_libs in "${TEMP}/initrd-temp/lib/evms/*/swap*.so"
do
rm ${swap_libs}
done
fi
fi
for i in '[' ash basename cat chroot clear cp dirname echo env false find \
grep gunzip gzip ln ls loadkmap losetup lsmod mdev mkdir mknod more mount \
mv pivot_root ps awk pwd rm rmdir rmmod sed sh sleep tar test touch true \
umount uname xargs yes zcat chmod chown cut kill killall; do
rm -f ${TEMP}/initrd-temp/bin/$i > /dev/null
ln ${TEMP}/initrd-temp/bin/busybox ${TEMP}/initrd-temp/bin/$i ||
gen_die "Busybox error: could not link ${i}!"
done
if isTrue ${LUKS}
then
if is_static /bin/cryptsetup
then
print_info 1 "Including LUKS support"
rm -f ${TEMP}/initrd-temp/sbin/cryptsetup
cp /bin/cryptsetup ${TEMP}/initrd-temp/sbin/cryptsetup
chmod +x "${TEMP}/initrd-temp/sbin/cryptsetup"
elsif is_static /sbin/cryptsetup
then
print_info 1 "Including LUKS support"
rm -f ${TEMP}/initrd-temp/sbin/cryptsetup
cp /sbin/cryptsetup ${TEMP}/initrd-temp/sbin/cryptsetup
chmod +x "${TEMP}/initrd-temp/sbin/cryptsetup"
else
print_info 1 "LUKS support requires static cryptsetup at /bin/cryptsetup or /sbin/cryptsetup"
print_info 1 "Not including LUKS support"
fi
fi
}
print_list() {
local x
for x in ${*}
do
echo ${x}
done
}
create_initrd_modules() {
local group
local group_modules
if [ "${PAT}" -gt "4" ]
then
MOD_EXT=".ko"
else
MOD_EXT=".o"
fi
print_info 2 "initrd: >> Searching for modules..."
if [ "${INSTALL_MOD_PATH}" != '' ]
then
cd ${INSTALL_MOD_PATH}
else
cd /
fi
for i in `gen_dep_list`
do
mymod=`find ./lib/modules/${KV} -name "${i}${MOD_EXT}" 2>/dev/null| head -n 1`
if [ -z "${mymod}" ]
then
print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
continue;
fi
print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
done
cp -ax --parents ./lib/modules/${KV}/modules* ${TEMP}/initrd-temp 2>/dev/null
mkdir -p "${TEMP}/initrd-temp/etc/modules"
for group_modules in ${!MODULES_*}; do
group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
done
}
create_initrd_aux() {
if [ -f "${CMD_LINUXRC}" ]
then
cp "${CMD_LINUXRC}" "${TEMP}/initrd-temp/linuxrc"
print_info 2 " >> Copying user specified linuxrc: ${CMD_LINUXRC}"
else
if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
then
cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
else
cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
fi
fi
# Make sure it's executable
chmod 0755 "${TEMP}/initrd-temp/linuxrc"
if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
then
cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
else
cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
fi
if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
then
cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
else
cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
fi
echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
for group_modules in ${!MODULES_*}; do
group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
done
echo '"' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
then
cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
else
cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
fi
if isTrue $CMD_DOKEYMAPAUTO
then
echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
fi
mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
/bin/tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
if isTrue $CMD_SLOWUSB
then
echo 'MY_HWOPTS="${MY_HWOPTS} slowusb"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
fi
cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
cd ${OLDPWD}
chmod +x "${TEMP}/initrd-temp/linuxrc"
chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
}
calc_initrd_size() {
local TEST
cd ${TEMP}/initrd-temp/
TEST=`du -sk 2> /dev/null`
echo $TEST | cut "-d " -f1
}
create_initrd() {
local MOD_EXT
print_info 1 "initrd: >> Initializing..."
create_base_initrd_sys
if [ "${NOINITRDMODULES}" -eq '0' ]
then
print_info 1 " >> Copying modules..."
create_initrd_modules
else
print_info 1 "initrd: Not copying modules..."
fi
print_info 1 " >> Copying auxilary files..."
create_initrd_aux
INITRD_CALC_SIZE=`calc_initrd_size`
INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 250`
print_info 1 " :: Size is at ${INITRD_SIZE}K"
print_info 1 " >> Creating loopback filesystem..."
create_initrd_loop ${INITRD_SIZE}
print_info 1 " >> Moving initrd files to the loopback..."
move_initrd_to_loop
print_info 1 " >> Cleaning up and compressing the initrd..."
create_initrd_unmount_loop
if [ "${COMPRESS_INITRD}" ]
then
gzip -f -9 ${TMPDIR}/initrd-${KV}
mv ${TMPDIR}/initrd-${KV}.gz ${TMPDIR}/initrd-${KV}
fi
if ! isTrue "${CMD_NOINSTALL}"
then
copy_image_with_preserve "initrd" \
"${TMPDIR}/initrd-${KV}" \
"initrd-${KNAME}-${ARCH}-${KV}"
fi
if [ "${ENABLE_PEGASOS_HACKS}" = 'yes' ]
then
# Pegasos hack for merging the initramfs into the kernel at compile time
cp ${TMPDIR}/initrd-${KV} ${KERNEL_DIR}/arch/${ARCH}/boot/images/ramdisk.image.gz &&
rm ${TMPDIR}/initrd-${KV}
fi
}
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