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.
25 # If you want to do some extra debugging and diagnosis of the
26 # initramfs image, then uncomment this line. This makes the image
30 modules="-i kernel -i bash -i coreutils -i lvm2 -i ntfs-3g -i util-linux-ng -i MAKEDEV -i net-tools -i augeas-libs -i file"
32 if [ "x$debug" = "xyes" ]; then
33 modules="$modules -i module-init-tools -i procps -i strace -i iputils"
36 # Decide on names for the final output. These have to match Makefile.am.
37 output=initramfs.@REPO@.@host_cpu@.img
38 koutput=vmlinuz.@REPO@.@host_cpu@
42 # Create the basic initramfs.
43 @FEBOOTSTRAP@ $modules -u @UPDATES@ @REPO@ initramfs @MIRROR@
45 # /sysroot is where the guest root filesystem will be mounted.
46 mkdir initramfs/sysroot
48 # Create /tmp if it is missing.
49 mkdir -p initramfs/tmp
50 @FEBOOTSTRAP_RUN@ initramfs -- chmod 0777 /tmp
52 # Make a safe 'install_file' function to install files into the
53 # filesystem. XXX We need a 'febootstrap-install' utility.
54 # Usage: install_file <local-file> <target-pathname> mode owner[.group]
57 cp "$1" initramfs/"$2"
58 # Get the inode of the new file and remove it from fakeroot.log.
59 ino=$(ls -i initramfs/"$2" | awk '{print $1}')
60 cp initramfs/fakeroot.log fakeroot.log.old
61 grep -v "ino=$ino," fakeroot.log.old > initramfs/fakeroot.log
63 # Set mode, owner and group as desired.
64 @FEBOOTSTRAP_RUN@ initramfs -- chmod "$3" "$2"
65 @FEBOOTSTRAP_RUN@ initramfs -- chown "$4" "$2"
68 # Nuke some stuff. The kernel pulls mkinitrd and plymouth which pulls in
69 # all of Python. Sheez.
70 find initramfs -name '*plymouth*' -print0 | xargs -0 rm -rf
71 find initramfs -name '*python*' -print0 | xargs -0 rm -rf
73 # Modules take up nearly half of the image. It's a rough guess that
74 # we don't need many drivers (which take up most of the space).
75 find initramfs/lib/modules/*/kernel \
78 -a ! -name '8139cp.ko' \
79 -a ! -name 'ext2.ko' \
80 -a ! -name 'ext4.ko' \
81 -a ! -name 'crc16.ko' \
82 -a ! -name 'jbd2.ko' \
83 -a ! -name 'fuse.ko' \
86 # Pull the kernel out into the current directory. We don't want it in
87 # the initramfs image.
88 mv initramfs/boot/vmlinuz* $koutput
92 @FEBOOTSTRAP_MINIMIZE@ initramfs
94 # Add some missing configuration files.
95 if [ ! -f initramfs/etc/hosts ]; then
96 cat > hosts.new <<'__EOF__'
97 127.0.0.1 guestfs localhost.localdomain localhost
98 ::1 localhost6.localdomain6 localhost6
100 install_file hosts.new /etc/hosts 0644 root.root
104 if [ ! -f initramfs/etc/fstab ]; then
105 @FEBOOTSTRAP_RUN@ initramfs -- touch /etc/fstab
108 echo nameserver 10.0.2.3 > resolv.conf.new
109 install_file resolv.conf.new /etc/resolv.conf 0644 root.root
112 # Create the init script.
113 cat > init.new <<'__EOF__'
115 PATH=/sbin:/usr/sbin:$PATH
116 MAKEDEV mem null port zero core full ram tty console fd \
117 hda hdb hdc hdd sda sdb sdc sdd loop sd
118 mount -t proc /proc /proc
119 mount -t sysfs /sys /sys
120 mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
122 /sbin/ifconfig lo 127.0.0.1
123 /sbin/ifconfig eth0 10.0.2.10
124 /sbin/route add default gw 10.0.2.2
125 lvm vgscan --ignorelockingfailure
126 lvm vgchange -ay --ignorelockingfailure
129 if [ "x$debug" != "xyes" ]; then
130 echo exec guestfsd -f >> init.new
132 echo guestfsd >> init.new
133 echo exec bash -i >> init.new
136 install_file init.new /init 0755 root.root
139 # Copy the daemon into the filesystem.
140 install_file @abs_builddir@/daemon/guestfsd /sbin/guestfsd 0755 root.root
142 # Generate final image.
143 @FEBOOTSTRAP_TO_INITRAMFS@ initramfs > $output-t