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#!/bin/bash -
# @configure_input@
# Copyright (C) 2009 Red Hat Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
# This is called from the Makefile to build the initramfs.
unset CDPATH
set -e
cd @top_builddir@
modules="
-i augeas-libs
-i bash
-i binutils
-i coreutils
-i dosfstools
-i file
-i grub
-i iputils
-i kernel
-i lvm2
-i MAKEDEV
-i module-init-tools
-i net-tools
-i ntfs-3g
-i ntfsprogs
-i procps
-i strace
-i util-linux-ng
-i zerofree
"
# Decide on names for the final output. These have to match Makefile.am.
output=appliance/initramfs.@REPO@.@host_cpu@.img
koutput=appliance/vmlinuz.@REPO@.@host_cpu@
rm -f $output
rm -f $koutput
# Create the basic initramfs.
@FEBOOTSTRAP@ $modules -u @UPDATES@ @REPO@ initramfs @MIRROR@
# /sysroot is where the guest root filesystem will be mounted.
@FEBOOTSTRAP_RUN@ initramfs -- mkdir -p --mode=0777 /sysroot
# Create /tmp if it is missing.
@FEBOOTSTRAP_RUN@ initramfs -- mkdir -p --mode=0777 /tmp
# Nuke some stuff. The kernel pulls mkinitrd and plymouth which pulls in
# all of Python. Sheez.
(cd initramfs && find -name '*plymouth*' -print0) |
xargs -0 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf
(cd initramfs && find -name '*python*' -print0) |
xargs -0 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf
# In Fedora >= 11, it pulls in all of Perl from somewhere. Nuke from orbit.
@FEBOOTSTRAP_RUN@ initramfs -- rm -rf /usr/lib/perl5 /usr/lib64/perl5
# Anaconda? JPEG images?
@FEBOOTSTRAP_RUN@ initramfs -- rm -rf /usr/lib/anaconda-runtime
# Don't need any firmware.
@FEBOOTSTRAP_RUN@ initramfs -- rm -rf /lib/firmware
# Don't need any keyboard maps.
@FEBOOTSTRAP_RUN@ initramfs -- rm -rf /lib/kbd
# Remove anything in home directory. Because this is potentially
# liable to monstrous fuck-ups, we don't put a slash before 'home'.
(cd initramfs && echo home/*) |
xargs @FEBOOTSTRAP_RUN@ initramfs -- rm -rf
# Remove /var/lib/yum stuff.
@FEBOOTSTRAP_RUN@ initramfs -- rm -rf /var/lib/yum
# Remove some unreadable binaries which are incompatible with
# the supermin appliance. Since these binaries can't be read
# from the host filesystem, they generate warnings like:
# cpio: ./usr/bin/chfn: Cannot open: Permission denied
# These binaries are not needed for operation of the appliance.
@FEBOOTSTRAP_RUN@ initramfs -- rm -f \
/usr/bin/chfn \
/usr/bin/chsh \
/usr/libexec/pt_chown \
/usr/sbin/groupdel \
/usr/sbin/groupadd \
/usr/sbin/useradd \
/usr/sbin/tzdata-update \
/usr/sbin/userdel \
/usr/sbin/usermod \
/usr/sbin/groupmod \
/usr/sbin/groupmems \
/sbin/unix_update \
$(cd initramfs && echo usr/sbin/glibc_post_upgrade.*)
# Kernel modules take up nearly half of the image. Only include ones
# which are on the whitelist.
exec 5<appliance/kmod.whitelist
whitelist=
while read kmod 0<&5; do
whitelist="$whitelist -a -not -name $kmod"
done
exec 5<&-
(cd initramfs && \
find lib/modules/*/kernel -name '*.ko' $whitelist -a -print0 ) |
xargs -0 febootstrap-run initramfs -- rm
# Pull the kernel out into the current directory. We don't want it in
# the initramfs image.
cp initramfs/boot/vmlinuz* $koutput
@FEBOOTSTRAP_RUN@ initramfs -- rm -rf boot
# Minimize the image.
@FEBOOTSTRAP_MINIMIZE@ initramfs
# Add some missing configuration files.
if [ ! -f initramfs/etc/hosts ]; then
cat > hosts.new <<'__EOF__'
127.0.0.1 guestfs localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
__EOF__
@FEBOOTSTRAP_INSTALL@ initramfs hosts.new /etc/hosts 0644 root.root
rm hosts.new
fi
if [ ! -f initramfs/etc/fstab ]; then
@FEBOOTSTRAP_RUN@ initramfs -- touch /etc/fstab
fi
echo nameserver 10.0.2.3 > resolv.conf.new
@FEBOOTSTRAP_INSTALL@ initramfs resolv.conf.new /etc/resolv.conf 0644 root.root
rm resolv.conf.new
# Create the init script.
cat > init.new <<'__EOF__'
#!/bin/sh
echo Starting /init script ...
PATH=/sbin:/usr/sbin:$PATH
mount -t tmpfs none /dev
mkdir /dev/pts /dev/shm /dev/mapper
MAKEDEV mem null port zero core full ram tty console fd \
hda hdb hdc hdd sda sdb sdc sdd loop sd
mknod /dev/ptmx c 5 2; chmod 0666 /dev/ptmx
mknod /dev/random c 1 8; chmod 0666 /dev/random
mknod /dev/urandom c 1 9; chmod 0444 /dev/urandom
mount -t proc /proc /proc
mount -t sysfs /sys /sys
mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
ln -sf /proc/self/fd/0 /dev/stdin
ln -sf /proc/self/fd/1 /dev/stdout
ln -sf /proc/self/fd/2 /dev/stderr
modprobe virtio_pci
modprobe virtio_net
modprobe dm_mod ||:
/sbin/ifconfig lo 127.0.0.1
/sbin/ifconfig eth0 10.0.2.10
/sbin/route add default gw 10.0.2.2
lvm vgscan --ignorelockingfailure
lvm vgchange -ay --ignorelockingfailure
if grep -sq guestfs_rescue=1 /proc/cmdline; then
bash -i
fi
exec guestfsd -f
__EOF__
@FEBOOTSTRAP_INSTALL@ initramfs init.new /init 0755 root.root
rm init.new
# Just in case the kernel isn't looking for /init, make /sbin/init
# be our script, not the real init.
#@FEBOOTSTRAP_RUN@ initramfs -- ln -f /init /sbin/init
ls -lh $koutput
# Now directly run the update script to copy/update the daemon in the
# initramfs.
cd appliance && bash update.sh
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