Beginning of a setup filesystem preparation script that can be used to run

and test a freshly built copy of the DevBox PlanetLab software in user-mode
using either qemu (preferred) or uml.

diff --git a/emsetup.sh b/emsetup.sh
new file mode 100755 (executable)
index 0000000..d7235a5
--- /dev/null
+++ b/emsetup.sh
@@ -0,0 +1,376 @@
+#!/bin/bash
+#
+# Copyright (c) 2005  The Trustees of Princeton University (Trustees).
+# All Rights Reserved.
+#
+# Original from Mark Huang to setup uml
+# Adapted by Marc Fiucznski to support qemu
+#
+# umsetup is used to create a filesystem image, kernel, and related
+# files needed to run either UML or qemu.  It is intended to be used
+# either by individuals for their own testing purposes, or as a
+# nightly script on an build/qa system for automated testing.
+#
+# $Id:$
+
+STEPS="Mkfs Install InstallKernel InstallVRef Config"
+
+usage ()
+{
+    echo "usage: $0 [-s $STEPS] [-t uml|qemu] [-y yum.conf] [kernelbuilddir] [installroot] [package ...]"
+    exit 1
+}    
+
+# default filesystem setup for uml
+TYPE="qemu"
+
+# defaults
+YUMCONF=
+UTS_RELEASE=
+
+# Must be root for some tasks
+if [ $UID -ne 0 ] ; then
+    echo "Must be root to run $0"
+    exit 1
+fi
+
+# Get options
+while getopts 's:i:t:y:h' OPT ; do
+    case "$OPT" in
+        s)
+           STEPS=$OPTARG
+           ;;
+
+       t)
+           case "$OPTARG" in
+               uml)
+                       TYPE="uml"
+                       ;;
+               qemu)
+                       TYPE="qemu"
+                       ;;
+               *)
+                       echo "expecting 'uml' or 'qemu', got $OPTARG"
+                       usage
+                       ;;
+           esac
+           ;;
+
+         y)
+               YUMCONF=$OPTARG
+               if [ ! -f "$YUMCONF" ]; then
+                       echo "yum configuration file $YUMCONF not found"
+                       usage
+               fi
+               ;;      
+
+         h)
+               usage
+               ;;
+    esac
+done
+
+# Get arguments
+shift $(($OPTIND - 1))
+KERNEL=$1
+shift
+INSTALLROOT=$1
+PACKAGE="$@"
+
+
+# setup the UTS_RELEASE
+if [ -d "$KERNEL" -a -f "$KERNEL/include/linux/version.h" ] ; then
+    eval UTS_RELEASE=$(echo "#include <linux/version.h>" | cpp -I "$KERNEL/include" -dM - | awk '/UTS_RELEASE/ { print $3 }')
+else
+    echo "$KERNEL is not a valid linux kernel directory"
+    exit 0
+fi
+
+# set installation mount point
+if [ -z "$INSTALLROOT" ] ; then
+    INSTALLROOT=$(mktemp -d "/tmp/mountpoint.XXXXXX")
+fi
+# Convert to absolute path
+INSTALLROOT=$(cd $INSTALLROOT && pwd)
+
+# set packages
+if [ -z "$PACKAGE" ] ; then
+    PACKAGE=PlanetLab
+fi
+
+# Bail on any simple error
+set -e
+
+# Be verbose
+set -x
+
+Unmount ()
+{
+    # Unmount / image
+    if grep -q $INSTALLROOT /etc/mtab ; then
+       umount $INSTALLROOT
+       rmdir $INSTALLROOT
+    fi
+}
+
+Mount ()
+{
+    # Mount / image
+    if ! grep -q $INSTALLROOT /etc/mtab ; then
+       mkdir -p $INSTALLROOT
+       modprobe loop
+       mount -o loop fs.img $INSTALLROOT
+    fi
+}
+
+Mkfs ()
+{
+    # Make / image
+    if [ ! -f fs.img ] ; then
+       dd bs=1M count=2048 < /dev/zero > fs.img
+    fi
+    /sbin/mkfs.ext2 -F -j fs.img
+}
+
+MakeDevs () 
+{
+    FAKEROOT=$1
+    if [ ! -z "$FAKEROOT" -a "$FAKEROOT" != "/" ] ; then
+       rm -rf $FAKEROOT/dev
+       mkdir -p $FAKEROOT/dev
+       mknod -m 666 $FAKEROOT/dev/null c 1 3
+       mknod -m 666 $FAKEROOT/dev/zero c 1 5
+       mknod -m 666 $FAKEROOT/dev/full c 1 7
+       mknod -m 644 $FAKEROOT/dev/random c 1 8
+       mknod -m 644 $FAKEROOT/dev/urandom c 1 9
+       mknod -m 666 $FAKEROOT/dev/tty c 5 0
+       mknod -m 666 $FAKEROOT/dev/ptmx c 5 2
+       mkdir -p $FAKEROOT/dev/pts
+       # well, /proc really is not in /dev
+       mkdir -p $FAKEROOT/proc
+    fi
+}
+
+Install ()
+{
+    Mount
+
+    # Bootstrap RPM
+    mkdir -p $INSTALLROOT/var/lib/rpm
+    mkdir -p $INSTALLROOT/etc/rpm
+
+    # Only install English language locale files
+    cat > $INSTALLROOT/etc/rpm/macros <<EOF
+%_install_langs en_US:en
+EOF
+
+    # Initialize RPM database
+    rpm --root $INSTALLROOT --initdb
+
+    # Write TYPE specific fstab 
+    if [ "$TYPE" = "uml" ] ; then
+        # Mount home directory inside UML
+       mkdir -p $INSTALLROOT/$HOME
+
+       cat > $INSTALLROOT/etc/fstab <<EOF
+/dev/ubd/0     /               ext3    defaults 0 0
+/dev/ubd/1     /vservers       ext3    defaults 0 0
+EOF
+    else
+       cat > $INSTALLROOT/etc/fstab <<EOF
+/dev/hda       /               ext3    defaults 0 0
+EOF
+    fi
+
+    # Write rest of fstab
+    cat >> $INSTALLROOT/etc/fstab <<EOF
+none           /proc           proc    defaults 0 0
+none           /dev/shm        tmpfs   defaults 0 0
+none           /dev/pts        devpts  defaults 0 0
+none           /rcfs           rcfs    defaults 0 0
+EOF
+
+    TMP=$(mktemp "/tmp/yum.conf.XXXXXX")
+    if [ -z "$YUMCONF" ] ; then
+       cp yum.conf $TMP
+    else
+       cp $YUMCONF $TMP
+    fi
+       
+    MakeDevs $INSTALLROOT
+    # create mount points for /dev/pts and /proc
+    mount -t devpts none $INSTALLROOT/dev/pts
+    mount -t proc none $INSTALLROOT/proc
+
+    # Install
+    yum -c $TMP -y --installroot $INSTALLROOT install glibc yum
+    yum -c $TMP -y --installroot $INSTALLROOT groupinstall $PACKAGE
+    rm -f $TMP
+
+    umount $INSTALLROOT/dev/pts
+    umount $INSTALLROOT/proc
+
+    Unmount
+}
+
+InstallKernel () 
+{
+    Mount
+
+    mkdir -p $INSTALLROOT/boot
+
+    if [ -f $KERNEL/System.map ] ; then
+       cp $KERNEL/System.map $INSTALLROOT/boot/System.map-$UTS_RELEASE
+    fi
+    if [ -f $KERNEL/init/kerntypes.o ] ; then
+       cp $KERNEL/init/kerntypes.o $INSTALLROOT/boot/Kerntypes-$UTS_RELEASE
+    fi
+    make -C $KERNEL modules_install INSTALL_MOD_PATH=$INSTALLROOT DEPMOD=/bin/true
+
+    rm -f ./initrd-$UTS_RELEASE.img ./bzImage-$UTS_RELEASE $INSTALLROOT/boot/initrd-$UTS_RELEASE.img
+    /usr/sbin/chroot $INSTALLROOT /sbin/depmod -ae -F /boot/System.map-$UTS_RELEASE $UTS_RELEASE
+    /usr/sbin/chroot $INSTALLROOT mkinitrd /boot/initrd-$UTS_RELEASE.img $UTS_RELEASE
+    cp $INSTALLROOT/boot/initrd-$UTS_RELEASE.img .
+
+    rm -f ./bzImage-$UTS_RELEASE ./vmlinux-$UTS_RELEASE
+    ln $KERNEL/arch/i386/boot/bzImage ./bzImage-$UTS_RELEASE
+    ln $KERNEL/vmlinux ./vmlinux-$UTS_RELEASE
+
+    ln -fs ./bzImage-$UTS_RELEASE ./bzImage
+    ln -fs ./initrd-$UTS_RELEASE.img ./initrd
+    ln -fs ./vmlinux-$UTS_RELEASE ./vmlinux
+
+    Unmount
+}
+
+InstallVRef ()
+{
+    Mount
+    
+    # Based on vserver-reference
+
+    VROOTDIR=$INSTALLROOT/vservers
+
+    # Make /vservers
+    mkdir -p $VROOTDIR
+    chmod 000 $VROOTDIR
+    chattr +t $VROOTDIR
+    
+    # Build image in /vservers/.vtmp
+    mkdir -p $VROOTDIR/.vtmp
+    VROOT=$(mktemp -d $VROOTDIR/.vtmp/vserver-reference.XXXXXX)
+
+    # Make /vservers/.vtmp/vserver-reference.XXXXXX
+    mkdir -p $VROOT
+    chattr -t $VROOT
+    chmod 755 $VROOT
+
+    echo $"Building VServer reference: "
+
+    MakeDevs $VROOT
+    # create fake drive
+    touch $VROOT/dev/hdv1
+
+    # create mount points for /dev/pts and /proc
+    mount -t devpts none $VROOT/dev/pts
+    mount -t proc none $VROOT/proc
+
+    # Create a dummy /etc/fstab in reference image
+    mkdir -p $VROOT/etc
+
+    cat > $VROOT/etc/fstab <<EOF
+# This fake fstab exists only to please df and linuxconf.
+/dev/hdv1      /       ext2    defaults        1 1
+EOF
+
+    cp $VROOT/etc/fstab $VROOT/etc/mtab
+
+    # Prevent all locales from being installed in reference image
+    mkdir -p $VROOT/etc/rpm
+    cat > $VROOT/etc/rpm/macros <<EOF
+%_install_langs en_US:en
+%_excludedocs 1
+%__file_context_path /dev/null
+EOF
+
+    # Initialize RPM database in reference image
+    mkdir -p $VROOT/var/lib/rpm
+    rpm --root $VROOT --initdb
+
+    # Install RPMs in reference image
+    TMP=$(mktemp "/tmp/yum.conf.XXXXXX")
+    if [ -z "$YUMCONF" ] ; then
+       cp yum.conf $TMP
+    else
+       cp $YUMCONF $TMP
+    fi
+
+    SSLCERTDIR=
+    yum $SSLCERTDIR -c $TMP --installroot=$VROOT -y groupinstall VServer
+    rm -f $TMP
+
+    # Clean up /dev in reference image
+    umount $VROOT/dev/pts
+
+    # Disable all services in reference image
+    chroot $VROOT /bin/sh -c "chkconfig --list | awk '{ print \$1 }' | xargs -i chkconfig {} off"
+
+    # Copy configuration files from host to reference image
+    for file in /etc/hosts /etc/resolv.conf /etc/yum.conf ; do
+       if [ -f $file ] ; then
+           echo $file | cpio -p -d -u $VROOT
+       fi
+    done
+
+    # Clean up
+    umount $VROOT/proc
+
+    # Swap them when complete
+    mv $VROOT $VROOTDIR
+    if [ -d $VROOTDIR/vserver-reference ] ; then
+       mv $VROOTDIR/vserver-reference $VROOT
+       rm -rf $VROOT
+    fi
+    mv $VROOTDIR/$(basename $VROOT) $VROOTDIR/vserver-reference
+
+    # turn off vserver-reference in host image
+    chkconfig --del vserver-reference
+
+
+    Unmount
+}
+
+
+Config ()
+{
+    Mount
+
+    # Set local time to UTC
+    ln -sf /usr/share/zoneinfo/UTC $INSTALLROOT/etc/localtime
+
+    # Write network configuration
+    cat > $INSTALLROOT/etc/hosts <<EOF
+127.0.0.1      localhost
+EOF
+    cp /etc/resolv.conf $INSTALLROOT/etc/
+
+    # Disable unneeded services
+    SERVICES="netfs rawdevices cpuspeed smartd"
+    # i686 only
+    SERVICES="$SERVICES microcode_ctl"
+    # syslogd and sendmail broken for some reason
+    SERVICES="$SERVICES syslog sendmail"
+    # Not now
+    SERVICES="$SERVICES pl_conf pl_nm pl_spd PlanetLabID PlanetLabConf"
+    for service in $SERVICES ; do
+       /usr/sbin/chroot $INSTALLROOT chkconfig $service off || :
+    done
+
+    Unmount
+}
+
+trap "Unmount ; exit 255"
+
+for step in $STEPS ; do
+    eval $step
+done