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.
49 # Decide on names for the final output. These have to match Makefile.am.
50 output=appliance/initramfs.@REPO@.@host_cpu@.img
51 koutput=appliance/vmlinuz.@REPO@.@host_cpu@
55 # Create the basic initramfs.
56 @FEBOOTSTRAP@ $modules -u @UPDATES@ @REPO@ initramfs @MIRROR@
58 # /sysroot is where the guest root filesystem will be mounted.
59 @FEBOOTSTRAP_RUN@ initramfs -- mkdir -p --mode=0777 /sysroot
61 # Create /tmp if it is missing.
62 @FEBOOTSTRAP_RUN@ initramfs -- mkdir -p --mode=0777 /tmp
64 # Nuke some stuff. The kernel pulls mkinitrd and plymouth which pulls in
65 # all of Python. Sheez.
66 (cd initramfs && find -name '*plymouth*' -print0) |
67 xargs -0 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf
68 (cd initramfs && find -name '*python*' -print0) |
69 xargs -0 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf
71 # In Fedora >= 11, it pulls in all of Perl from somewhere. Nuke from orbit.
72 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf /usr/lib/perl5 /usr/lib64/perl5
74 # Anaconda? JPEG images?
75 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf /usr/lib/anaconda-runtime
77 # Don't need any firmware.
78 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf /lib/firmware
80 # Don't need any keyboard maps.
81 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf /lib/kbd
83 # Remove anything in home directory. Because this is potentially
84 # liable to monstrous fuck-ups, we don't put a slash before 'home'.
85 (cd initramfs && echo home/*) |
86 xargs @FEBOOTSTRAP_RUN@ initramfs -- rm -rf
88 # Remove /var/lib/yum stuff.
89 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf /var/lib/yum
91 # Remove some unreadable binaries which are incompatible with
92 # the supermin appliance. Since these binaries can't be read
93 # from the host filesystem, they generate warnings like:
94 # cpio: ./usr/bin/chfn: Cannot open: Permission denied
95 # These binaries are not needed for operation of the appliance.
96 @FEBOOTSTRAP_RUN@ initramfs -- rm -f \
99 /usr/libexec/pt_chown \
103 /usr/sbin/tzdata-update \
107 /usr/sbin/groupmems \
109 $(cd initramfs && echo usr/sbin/glibc_post_upgrade.*)
111 # Kernel modules take up nearly half of the image. Only include ones
112 # which are on the whitelist.
113 exec 5<appliance/kmod.whitelist
115 while read kmod 0<&5; do
116 whitelist="$whitelist -a -not -name $kmod"
121 find lib/modules/*/kernel -name '*.ko' $whitelist -a -print0 ) |
122 xargs -0 febootstrap-run initramfs -- rm
124 # Pull the kernel out into the current directory. We don't want it in
125 # the initramfs image.
126 cp initramfs/boot/vmlinuz* $koutput
127 @FEBOOTSTRAP_RUN@ initramfs -- rm -rf boot
129 # Minimize the image.
130 @FEBOOTSTRAP_MINIMIZE@ initramfs
132 # Add some missing configuration files.
133 if [ ! -f initramfs/etc/hosts ]; then
134 cat > hosts.new <<'__EOF__'
135 127.0.0.1 guestfs localhost.localdomain localhost
136 ::1 localhost6.localdomain6 localhost6
138 @FEBOOTSTRAP_INSTALL@ initramfs hosts.new /etc/hosts 0644 root.root
142 if [ ! -f initramfs/etc/fstab ]; then
143 @FEBOOTSTRAP_RUN@ initramfs -- touch /etc/fstab
146 echo nameserver 10.0.2.3 > resolv.conf.new
147 @FEBOOTSTRAP_INSTALL@ initramfs resolv.conf.new /etc/resolv.conf 0644 root.root
150 # Create the init script.
151 cat > init.new <<'__EOF__'
153 echo Starting /init script ...
154 PATH=/sbin:/usr/sbin:$PATH
155 mount -t tmpfs none /dev
156 mkdir /dev/pts /dev/shm /dev/mapper
157 MAKEDEV mem null port zero core full ram tty console fd \
158 hda hdb hdc hdd sda sdb sdc sdd loop sd
159 mknod /dev/ptmx c 5 2; chmod 0666 /dev/ptmx
160 mknod /dev/random c 1 8; chmod 0666 /dev/random
161 mknod /dev/urandom c 1 9; chmod 0444 /dev/urandom
162 mount -t proc /proc /proc
163 mount -t sysfs /sys /sys
164 mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
165 ln -sf /proc/self/fd/0 /dev/stdin
166 ln -sf /proc/self/fd/1 /dev/stdout
167 ln -sf /proc/self/fd/2 /dev/stderr
171 /sbin/ifconfig lo 127.0.0.1
172 /sbin/ifconfig eth0 10.0.2.10
173 /sbin/route add default gw 10.0.2.2
174 lvm vgscan --ignorelockingfailure
175 lvm vgchange -ay --ignorelockingfailure
176 if grep -sq guestfs_rescue=1 /proc/cmdline; then
182 @FEBOOTSTRAP_INSTALL@ initramfs init.new /init 0755 root.root
185 # Just in case the kernel isn't looking for /init, make /sbin/init
186 # be our script, not the real init.
187 #@FEBOOTSTRAP_RUN@ initramfs -- ln -f /init /sbin/init
191 # Now directly run the update script to copy/update the daemon in the
193 cd appliance && bash update.sh