3 # Copyright (C) 2009 Red Hat Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 # This is called from the Makefile to build the initramfs.
23 # If you want to do some extra debugging and diagnosis of the
24 # initramfs image, then uncomment this line. This makes the image
28 modules="-i kernel -i bash -i coreutils -i lvm2 -i ntfs-3g -i util-linux-ng -i MAKEDEV -i net-tools"
30 if [ "x$debug" = "xyes" ]; then
31 modules="$modules -i module-init-tools -i procps -i strace -i iputils"
34 # Decide on names for the final output. These have to match Makefile.am.
35 output=initramfs.@REPO@.@host_cpu@.img
36 koutput=vmlinuz.@REPO@.@host_cpu@
40 # Create the basic initramfs.
41 @FEBOOTSTRAP@ $modules @REPO@ initramfs @MIRROR@
43 # /sysroot is where the guest root filesystem will be mounted.
44 mkdir initramfs/sysroot
46 # Make a safe 'install_file' function to install files into the
47 # filesystem. XXX We need a 'febootstrap-install' utility.
48 # Usage: install_file <local-file> <target-pathname> mode owner[.group]
51 cp "$1" initramfs/"$2"
52 # Get the inode of the new file and remove it from fakeroot.log.
53 ino=$(ls -i initramfs/"$2" | awk '{print $1}')
54 cp initramfs/fakeroot.log fakeroot.log.old
55 grep -v "ino=$ino," fakeroot.log.old > initramfs/fakeroot.log
57 # Set mode, owner and group as desired.
58 @FEBOOTSTRAP_RUN@ initramfs -- chmod "$3" "$2"
59 @FEBOOTSTRAP_RUN@ initramfs -- chown "$4" "$2"
62 # Nuke some stuff. The kernel pulls mkinitrd and plymouth which pulls in
63 # all of Python. Sheez.
64 find initramfs -name '*plymouth*' -print0 | xargs -0 rm -rf
65 find initramfs -name '*python*' -print0 | xargs -0 rm -rf
67 # Modules take up nearly half of the image. It's a rough guess that
68 # we don't need any drivers (which take up most of the space).
69 #rm -rf initramfs/lib/modules/*/kernel/{drivers,sound}
70 rm -rf initramfs/lib/modules/*/kernel/arch/x86/kvm
72 # Pull the kernel out into the current directory. We don't want it in
73 # the initramfs image.
74 mv initramfs/boot/vmlinuz* $koutput
78 @FEBOOTSTRAP_MINIMIZE@ initramfs
80 # Add some missing configuration files.
81 if [ ! -f initramfs/etc/hosts ]; then
82 cat > hosts.new <<'__EOF__'
83 127.0.0.1 guestfs localhost.localdomain localhost
84 ::1 localhost6.localdomain6 localhost6
86 install_file hosts.new /etc/hosts 0644 root.root
90 if [ ! -f initramfs/etc/fstab ]; then
91 @FEBOOTSTRAP_RUN@ initramfs -- touch /etc/fstab
94 echo nameserver 10.0.2.3 > resolv.conf.new
95 install_file resolv.conf.new /etc/resolv.conf 0644 root.root
98 # Create the init script.
99 cat > init.new <<'__EOF__'
101 PATH=/sbin:/usr/sbin:$PATH
102 MAKEDEV mem null port zero core full ram tty console fd \
103 hda hdb hdc hdd sda sdb sdc sdd loop sd
104 mount -t proc /proc /proc
105 mount -t sysfs /sys /sys
106 mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
108 /sbin/ifconfig lo 127.0.0.1
109 /sbin/ifconfig eth0 10.0.2.10
110 /sbin/route add default gw 10.0.2.2
111 lvm vgscan --ignorelockingfailure
112 lvm vgchange -ay --ignorelockingfailure
115 if [ "x$debug" != "xyes" ]; then
116 echo exec guestfsd -f >> init.new
118 echo guestfsd >> init.new
119 echo exec bash -i >> init.new
122 install_file init.new /init 0755 root.root
125 # Copy the daemon into the filesystem.
126 install_file @abs_builddir@/daemon/guestfsd /sbin/guestfsd 0755 root.root
128 # Generate final image.
129 @FEBOOTSTRAP_TO_INITRAMFS@ initramfs > $output-t