mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-21 22:53:37 +00:00
136 lines
4.2 KiB
Bash
Executable File
136 lines
4.2 KiB
Bash
Executable File
#!/bin/bash -
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# @configure_input@
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# Copyright (C) 2009 Red Hat Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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# This is called from the Makefile to build the initramfs.
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set -e
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# If you want to do some extra debugging and diagnosis of the
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# initramfs image, then uncomment this line. This makes the image
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# larger.
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debug=yes
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modules="-i kernel -i bash -i coreutils -i lvm2 -i ntfs-3g -i util-linux-ng -i MAKEDEV -i net-tools -i augeas-libs"
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if [ "x$debug" = "xyes" ]; then
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modules="$modules -i module-init-tools -i procps -i strace -i iputils"
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fi
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# Decide on names for the final output. These have to match Makefile.am.
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output=initramfs.@REPO@.@host_cpu@.img
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koutput=vmlinuz.@REPO@.@host_cpu@
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rm -f $output
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rm -f $koutput
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# Create the basic initramfs.
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@FEBOOTSTRAP@ $modules -u @UPDATES@ @REPO@ initramfs @MIRROR@
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# /sysroot is where the guest root filesystem will be mounted.
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mkdir initramfs/sysroot
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# Make a safe 'install_file' function to install files into the
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# filesystem. XXX We need a 'febootstrap-install' utility.
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# Usage: install_file <local-file> <target-pathname> mode owner[.group]
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install_file ()
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{
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cp "$1" initramfs/"$2"
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# Get the inode of the new file and remove it from fakeroot.log.
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ino=$(ls -i initramfs/"$2" | awk '{print $1}')
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cp initramfs/fakeroot.log fakeroot.log.old
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grep -v "ino=$ino," fakeroot.log.old > initramfs/fakeroot.log
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rm fakeroot.log.old
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# Set mode, owner and group as desired.
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@FEBOOTSTRAP_RUN@ initramfs -- chmod "$3" "$2"
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@FEBOOTSTRAP_RUN@ initramfs -- chown "$4" "$2"
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}
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# Nuke some stuff. The kernel pulls mkinitrd and plymouth which pulls in
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# all of Python. Sheez.
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find initramfs -name '*plymouth*' -print0 | xargs -0 rm -rf
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find initramfs -name '*python*' -print0 | xargs -0 rm -rf
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# Modules take up nearly half of the image. It's a rough guess that
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# we don't need any drivers (which take up most of the space).
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find initramfs/lib/modules/*/kernel \
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-name '*.ko' \
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-a ! -name 'mii.ko' \
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-a ! -name '8139cp.ko' \
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-a -delete
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# Pull the kernel out into the current directory. We don't want it in
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# the initramfs image.
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mv initramfs/boot/vmlinuz* $koutput
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rm -rf initramfs/boot
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# Minimize the image.
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@FEBOOTSTRAP_MINIMIZE@ initramfs
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# Add some missing configuration files.
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if [ ! -f initramfs/etc/hosts ]; then
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cat > hosts.new <<'__EOF__'
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127.0.0.1 guestfs localhost.localdomain localhost
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::1 localhost6.localdomain6 localhost6
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__EOF__
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install_file hosts.new /etc/hosts 0644 root.root
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rm hosts.new
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fi
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if [ ! -f initramfs/etc/fstab ]; then
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@FEBOOTSTRAP_RUN@ initramfs -- touch /etc/fstab
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fi
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echo nameserver 10.0.2.3 > resolv.conf.new
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install_file resolv.conf.new /etc/resolv.conf 0644 root.root
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rm resolv.conf.new
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# Create the init script.
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cat > init.new <<'__EOF__'
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#!/bin/sh
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PATH=/sbin:/usr/sbin:$PATH
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MAKEDEV mem null port zero core full ram tty console fd \
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hda hdb hdc hdd sda sdb sdc sdd loop sd
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mount -t proc /proc /proc
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mount -t sysfs /sys /sys
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mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
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modprobe 8139cp
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/sbin/ifconfig lo 127.0.0.1
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/sbin/ifconfig eth0 10.0.2.10
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/sbin/route add default gw 10.0.2.2
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lvm vgscan --ignorelockingfailure
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lvm vgchange -ay --ignorelockingfailure
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__EOF__
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if [ "x$debug" != "xyes" ]; then
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echo exec guestfsd -f >> init.new
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else
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echo guestfsd >> init.new
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echo exec bash -i >> init.new
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fi
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install_file init.new /init 0755 root.root
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rm init.new
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# Copy the daemon into the filesystem.
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install_file @abs_builddir@/daemon/guestfsd /sbin/guestfsd 0755 root.root
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# Generate final image.
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@FEBOOTSTRAP_TO_INITRAMFS@ initramfs > $output-t
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mv $output-t $output
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ls -lh $output
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ls -lh $koutput
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