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.
42 # Decide on names for the final output. These have to match Makefile.am.
43 output=initramfs.@REPO@.@host_cpu@.img
44 koutput=vmlinuz.@REPO@.@host_cpu@
48 # Create the basic initramfs.
49 @FEBOOTSTRAP@ $modules -u @UPDATES@ @REPO@ initramfs @MIRROR@
51 # /sysroot is where the guest root filesystem will be mounted.
52 mkdir initramfs/sysroot
53 @FEBOOTSTRAP_RUN@ initramfs -- chmod 0777 /sysroot
55 # Create /tmp if it is missing.
56 mkdir -p initramfs/tmp
57 @FEBOOTSTRAP_RUN@ initramfs -- chmod 0777 /tmp
59 # Make a safe 'install_file' function to install files into the
60 # filesystem. XXX We need a 'febootstrap-install' utility.
61 # Usage: install_file <local-file> <target-pathname> mode owner[.group]
64 cp "$1" initramfs/"$2"
65 # Get the inode of the new file and remove it from fakeroot.log.
66 ino=$(ls -i initramfs/"$2" | awk '{print $1}')
67 cp initramfs/fakeroot.log fakeroot.log.old
68 grep -v "ino=$ino," fakeroot.log.old > initramfs/fakeroot.log
70 # Set mode, owner and group as desired.
71 @FEBOOTSTRAP_RUN@ initramfs -- chmod "$3" "$2"
72 @FEBOOTSTRAP_RUN@ initramfs -- chown "$4" "$2"
75 # Nuke some stuff. The kernel pulls mkinitrd and plymouth which pulls in
76 # all of Python. Sheez.
77 find initramfs -name '*plymouth*' -print0 | xargs -0 rm -rf
78 find initramfs -name '*python*' -print0 | xargs -0 rm -rf
80 # Modules take up nearly half of the image. It's a rough guess that
81 # we don't need many drivers (which take up most of the space).
82 find initramfs/lib/modules/*/kernel \
85 -a ! -name '8139cp.ko' \
86 -a ! -name 'ext2.ko' \
87 -a ! -name 'ext4.ko' \
88 -a ! -name 'crc16.ko' \
89 -a ! -name 'jbd2.ko' \
90 -a ! -name 'fuse.ko' \
93 # Pull the kernel out into the current directory. We don't want it in
94 # the initramfs image.
95 mv initramfs/boot/vmlinuz* $koutput
99 @FEBOOTSTRAP_MINIMIZE@ initramfs
101 # Add some missing configuration files.
102 if [ ! -f initramfs/etc/hosts ]; then
103 cat > hosts.new <<'__EOF__'
104 127.0.0.1 guestfs localhost.localdomain localhost
105 ::1 localhost6.localdomain6 localhost6
107 install_file hosts.new /etc/hosts 0644 root.root
111 if [ ! -f initramfs/etc/fstab ]; then
112 @FEBOOTSTRAP_RUN@ initramfs -- touch /etc/fstab
115 echo nameserver 10.0.2.3 > resolv.conf.new
116 install_file resolv.conf.new /etc/resolv.conf 0644 root.root
119 # Create the init script.
120 cat > init.new <<'__EOF__'
122 PATH=/sbin:/usr/sbin:$PATH
123 MAKEDEV mem null port zero core full ram tty console fd \
124 hda hdb hdc hdd sda sdb sdc sdd loop sd
125 mount -t proc /proc /proc
126 mount -t sysfs /sys /sys
127 mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
129 /sbin/ifconfig lo 127.0.0.1
130 /sbin/ifconfig eth0 10.0.2.10
131 /sbin/route add default gw 10.0.2.2
132 lvm vgscan --ignorelockingfailure
133 lvm vgchange -ay --ignorelockingfailure
137 install_file init.new /init 0755 root.root
140 # Copy the daemon into the filesystem.
141 install_file @abs_builddir@/daemon/guestfsd /sbin/guestfsd 0755 root.root
143 # Generate final image.
144 @FEBOOTSTRAP_TO_INITRAMFS@ initramfs > $output-t