mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
154 lines
4.3 KiB
Bash
Executable File
154 lines
4.3 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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unset CDPATH
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modules="
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-i augeas-libs
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-i bash
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-i binutils
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-i coreutils
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-i dosfstools
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-i file
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-i grub
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-i iputils
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-i kernel
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-i lvm2
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-i MAKEDEV
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-i module-init-tools
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-i net-tools
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-i ntfs-3g
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-i ntfsprogs
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-i procps
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-i strace
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-i util-linux-ng
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-i zerofree
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"
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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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@FEBOOTSTRAP_RUN@ initramfs -- mkdir -p --mode=0777 /sysroot
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# Create /tmp if it is missing.
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@FEBOOTSTRAP_RUN@ initramfs -- mkdir -p --mode=0777 /tmp
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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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(cd initramfs && find -name '*plymouth*' -print0) |
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xargs -0 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf
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(cd initramfs && find -name '*python*' -print0) |
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xargs -0 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf
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# In Fedora >= 11, it pulls in all of Perl from somewhere. Nuke from orbit.
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@FEBOOTSTRAP_RUN@ initramfs -- rm -rf /usr/lib/perl5 /usr/lib64/perl5
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# Anaconda? JPEG images?
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@FEBOOTSTRAP_RUN@ initramfs -- rm -rf /usr/lib/anaconda-runtime
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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 many drivers (which take up most of the space).
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(cd initramfs && find lib/modules/*/kernel \
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-name '*.ko' \
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-a ! -name 'virtio.ko' \
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-a ! -name 'virtio_net.ko' \
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-a ! -name 'virtio_pci.ko' \
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-a ! -name 'virtio_ring.ko' \
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-a ! -name 'ext2.ko' \
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-a ! -name 'ext4.ko' \
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-a ! -name 'crc16.ko' \
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-a ! -name 'jbd2.ko' \
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-a ! -name 'fuse.ko' \
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-a ! -name 'vfat.ko' \
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-a ! -name 'fat.ko' \
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-a ! -name 'udf.ko' \
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-a ! -name 'crc_itu_t.ko' \
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-a ! -name 'nls_utf8.ko' \
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-a ! -name 'dm-*.ko' \
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-a -print0 ) |
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xargs -0 @FEBOOTSTRAP_RUN@ initramfs -- rm
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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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cp initramfs/boot/vmlinuz* $koutput
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@FEBOOTSTRAP_RUN@ initramfs -- rm -rf boot
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# Minimize the image.
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@FEBOOTSTRAP_MINIMIZE@ initramfs
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# Add some missing configuration files.
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if [ ! -f initramfs/etc/hosts ]; then
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cat > hosts.new <<'__EOF__'
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127.0.0.1 guestfs localhost.localdomain localhost
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::1 localhost6.localdomain6 localhost6
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__EOF__
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@FEBOOTSTRAP_INSTALL@ initramfs hosts.new /etc/hosts 0644 root.root
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rm hosts.new
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fi
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if [ ! -f initramfs/etc/fstab ]; then
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@FEBOOTSTRAP_RUN@ initramfs -- touch /etc/fstab
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fi
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echo nameserver 10.0.2.3 > resolv.conf.new
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@FEBOOTSTRAP_INSTALL@ initramfs resolv.conf.new /etc/resolv.conf 0644 root.root
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rm resolv.conf.new
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# Create the init script.
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cat > init.new <<'__EOF__'
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#!/bin/sh
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PATH=/sbin:/usr/sbin:$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 virtio_pci
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modprobe virtio_net
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modprobe dm_mod ||:
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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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exec guestfsd -f
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__EOF__
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@FEBOOTSTRAP_INSTALL@ initramfs 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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@FEBOOTSTRAP_INSTALL@ initramfs @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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