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poky/scripts/runqemu-internal
Richard Purdie fd428a09ee scripts/runqemu-internal: Fix lock races 
There are two problems here. Firstly the grep command is unanchored so
pid 345 will match against 12345 and so on.

The second issue is that there are several context switched between attempting
the lock and then writing the pid to it.

Between the two issues, there were issues appearing on the autobuilder due
to these conflicts. This patch replaces the mechanism with flock on fd 8
which should be a safer mechanism to use.

(From OE-Core rev: f1a126f2b0f419b2de573e2367d41d8ccc28b346)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2013-03-27 17:28:00 +00:00

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#!/bin/bash -x
# Handle running OE images under qemu
#
# Copyright (C) 2006-2011 Linux Foundation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
# Call setting:
# QEMU_MEMORY (optional) - set the amount of memory in the emualted system.
# SERIAL_LOGFILE (optional) - log the serial port output to a file
# CROSSPATH - the path to any cross toolchain to use with distcc
#
# Image options:
# MACHINE - the machine to run
# FSTYPE - the image type to run
# KERNEL - the kernel image file to use
# ROOTFS - the disk image file to use
#
mem_size=-1
#Get rid of <> and get the contents of extra qemu running params
SCRIPT_QEMU_EXTRA_OPT=`echo $SCRIPT_QEMU_EXTRA_OPT | sed -e 's/<//' -e 's/>//'`
#if user set qemu memory, eg: -m 256 in qemu extra params, we need to do some
# validation check
mem_set=`expr "$SCRIPT_QEMU_EXTRA_OPT" : '.*\(-m[[:space:]] *[0-9]*\)'`
if [ ! -z "$mem_set" ] ; then
#Get memory setting size from user input
mem_size=`echo $mem_set | sed 's/-m[[:space:]] *//'`
else
case "$MACHINE" in
"qemux86")
mem_size=128
;;
"qemux86-64")
mem_size=128
;;
"qemuarm")
mem_size=128
;;
"qemumips"|"qemumips64")
mem_size=128
;;
"qemuppc")
mem_size=128
;;
"qemush4")
mem_size=1024
;;
*)
mem_size=64
;;
esac
fi
# QEMU_MEMORY has 'M' appended to mem_size
QEMU_MEMORY="$mem_size"M
# Bug 433: qemuarm cannot use > 256 MB RAM
if [ "$MACHINE" = "qemuarm" ]; then
if [ -z "$mem_size" -o $mem_size -gt 256 ]; then
echo "WARNING: qemuarm does not support > 256M of RAM."
echo "Changing QEMU_MEMORY to default of 256M."
QEMU_MEMORY="256M"
mem_size="256"
SCRIPT_QEMU_EXTRA_OPT=`echo $SCRIPT_QEMU_EXTRA_OPT | sed -e "s/$mem_set/-m 256/" `
fi
fi
# We need to specify -m <mem_size> to overcome a bug in qemu 0.14.0
# https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/584480
if [ -z "$mem_set" ] ; then
SCRIPT_QEMU_EXTRA_OPT="$SCRIPT_QEMU_EXTRA_OPT -m $mem_size"
fi
# This file is created when runqemu-gen-tapdevs creates a bank of tap
# devices, indicating that the user should not bring up new ones using
# sudo.
NOSUDO_FLAG="/etc/runqemu-nosudo"
QEMUIFUP=`which runqemu-ifup 2> /dev/null`
QEMUIFDOWN=`which runqemu-ifdown 2> /dev/null`
if [ -z "$QEMUIFUP" -o ! -x "$QEMUIFUP" ]; then
echo "runqemu-ifup cannot be found or executed"
exit 1
fi
if [ -z "$QEMUIFDOWN" -o ! -x "$QEMUIFDOWN" ]; then
echo "runqemu-ifdown cannot be found or executed"
exit 1
fi
NFSRUNNING="false"
acquire_lock() {
lockfile=$1
if [ -z "$lockfile" ]; then
echo "Error: missing lockfile arg passed to acquire_lock()"
return 1
fi
touch $lockfile.lock
exec 8>$lockfile.lock
flock -n -x 8
if [ $? -ne 0 ]; then
exec 8>&-
return 1
fi
return 0
}
release_lock() {
lockfile=$1
if [ -z "$lockfile" ]; then
echo "Error: missing lockfile arg passed to release_lock()"
return 1
fi
rm -f $lockfile.lock
exec 8>&-
}
LOCKDIR="/tmp/qemu-tap-locks"
if [ ! -d "$LOCKDIR" ]; then
mkdir $LOCKDIR
chmod 777 $LOCKDIR
fi
IFCONFIG=`which ifconfig 2> /dev/null`
if [ -z "$IFCONFIG" ]; then
IFCONFIG=/sbin/ifconfig
fi
if [ ! -x "$IFCONFIG" ]; then
echo "$IFCONFIG cannot be executed"
exit 1
fi
POSSIBLE=`$IFCONFIG -a | grep '^tap' | awk '{print $1}' | sed s/://`
TAP=""
LOCKFILE=""
for tap in $POSSIBLE; do
LOCKFILE="$LOCKDIR/$tap"
echo "Acquiring lockfile for $tap..."
acquire_lock $LOCKFILE
if [ $? -eq 0 ]; then
TAP=$tap
break
fi
done
if [ "$TAP" = "" ]; then
if [ -e "$NOSUDO_FLAG" ]; then
echo "Error: There are no available tap devices to use for networking,"
echo "and I see $NOSUDO_FLAG exists, so I am not going to try creating"
echo "a new one with sudo."
exit 1
fi
GROUPID=`id -g`
USERID=`id -u`
echo "Setting up tap interface under sudo"
# Redirect stderr since we could see a LD_PRELOAD warning here if pseudo is loaded
# but inactive. This looks scary but is harmless
tap=`sudo $QEMUIFUP $USERID $GROUPID $OECORE_NATIVE_SYSROOT 2> /dev/null`
if [ $? -ne 0 ]; then
# Re-run standalone to see verbose errors
sudo $QEMUIFUP $USERID $GROUPID $OECORE_NATIVE_SYSROOT
return 1
fi
LOCKFILE="$LOCKDIR/$tap"
echo "Acquiring lockfile for $tap..."
acquire_lock $LOCKFILE
if [ $? -eq 0 ]; then
TAP=$tap
fi
else
echo "Using preconfigured tap device '$TAP'"
fi
cleanup() {
if [ ! -e "$NOSUDO_FLAG" ]; then
# Redirect stderr since we could see a LD_PRELOAD warning here if pseudo is loaded
# but inactive. This looks scary but is harmless
sudo $QEMUIFDOWN $TAP $OECORE_NATIVE_SYSROOT 2> /dev/null
fi
echo "Releasing lockfile of preconfigured tap device '$TAP'"
release_lock $LOCKFILE
if [ "$NFSRUNNING" = "true" ]; then
echo "Shutting down the userspace NFS server..."
echo "runqemu-export-rootfs stop $ROOTFS"
runqemu-export-rootfs stop $ROOTFS
fi
# If QEMU crashes or somehow tty properties are not restored
# after qemu exits, we need to run stty sane
stty sane
}
n0=$(echo $TAP | sed 's/tap//')
n1=$(($n0 * 2 + 1))
n2=$(($n1 + 1))
KERNEL_NETWORK_CMD="ip=192.168.7.$n2::192.168.7.$n1:255.255.255.0"
QEMU_TAP_CMD="-net tap,vlan=0,ifname=$TAP,script=no,downscript=no"
if [ "$KVM_ACTIVE" = "yes" ]; then
QEMU_NETWORK_CMD="-net nic,model=virtio $QEMU_TAP_CMD,vhost=on"
DROOT="/dev/vda"
ROOTFS_OPTIONS="-drive file=$ROOTFS,if=virtio"
else
QEMU_NETWORK_CMD="-net nic,vlan=0 $QEMU_TAP_CMD"
DROOT="/dev/hda"
ROOTFS_OPTIONS="-hda $ROOTFS"
fi
KERNCMDLINE="mem=$QEMU_MEMORY"
QEMU_UI_OPTIONS="-show-cursor -usb -usbdevice wacom-tablet"
NFS_INSTANCE=`echo $TAP | sed 's/tap//'`
export NFS_INSTANCE
SERIALOPTS=""
if [ "x$SERIAL_LOGFILE" != "x" ]; then
SERIALOPTS="-serial file:$SERIAL_LOGFILE"
fi
case "$MACHINE" in
"qemuarm") ;;
"qemumips") ;;
"qemumipsel") ;;
"qemumips64") ;;
"qemush4") ;;
"qemuppc") ;;
"qemuarmv6") ;;
"qemuarmv7") ;;
"qemux86") ;;
"qemux86-64") ;;
"akita") ;;
"spitz") ;;
*)
echo "Error: Unsupported machine type $MACHINE"
return 1
;;
esac
if [ ! -f "$KERNEL" ]; then
echo "Error: Kernel image file $KERNEL doesn't exist"
cleanup
return 1
fi
if [ "$FSTYPE" != "nfs" -a ! -f "$ROOTFS" ]; then
echo "Error: Image file $ROOTFS doesn't exist"
cleanup
return 1
fi
if [ "$FSTYPE" = "nfs" ]; then
NFS_SERVER="192.168.7.1"
NFS_DIR=`echo $ROOTFS | sed 's/^[^:]*:\(.*\)/\1/'`
MOUNTD_RPCPORT=$[ 21111 + $NFS_INSTANCE ]
NFSD_RPCPORT=$[ 11111 + $NFS_INSTANCE ]
NFSD_PORT=$[ 3049 + 2 * $NFS_INSTANCE ]
MOUNTD_PORT=$[ 3048 + 2 * $NFS_INSTANCE ]
UNFS_OPTS="nfsvers=2,mountprog=$MOUNTD_RPCPORT,nfsprog=$NFSD_RPCPORT,udp,port=$NFSD_PORT,mountport=$MOUNTD_PORT"
PSEUDO_LOCALSTATEDIR=~/.runqemu-sdk/pseudo
export PSEUDO_LOCALSTATEDIR
# Start the userspace NFS server
echo "runqemu-export-rootfs restart $ROOTFS"
runqemu-export-rootfs restart $ROOTFS
if [ $? != 0 ]; then
cleanup
return 1
fi
NFSRUNNING="true"
fi
if [ "$NFS_SERVER" = "" ]; then
NFS_SERVER="192.168.7.1"
NFS_DIR=$ROOTFS
fi
if [ "$MACHINE" = "qemuarm" -o "$MACHINE" = "qemuarmv6" -o "$MACHINE" = "qemuarmv7" ]; then
QEMU=qemu-system-arm
MACHINE_SUBTYPE=versatilepb
QEMU_UI_OPTIONS="$QEMU_UI_OPTIONS"
# QEMU_UI_OPTIONS="$QEMU_UI_OPTIONS -force-pointer"
if [ "$FSTYPE" = "ext3" -o "$FSTYPE" = "btrfs" ]; then
KERNCMDLINE="root=/dev/sda rw console=ttyAMA0,115200 console=tty $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY highres=off"
QEMUOPTIONS="$QEMU_NETWORK_CMD -M versatilepb -hda $ROOTFS -no-reboot $QEMU_UI_OPTIONS"
fi
if [ "$FSTYPE" = "nfs" ]; then
if [ "$NFS_SERVER" = "192.168.7.1" -a ! -d "$NFS_DIR" ]; then
echo "Error: NFS mount point $ROOTFS doesn't exist"
cleanup
return 1
fi
KERNCMDLINE="root=/dev/nfs nfsroot=$NFS_SERVER:$NFS_DIR,$UNFS_OPTS rw $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
QEMUOPTIONS="$QEMU_NETWORK_CMD -M versatilepb --no-reboot $QEMU_UI_OPTIONS"
fi
if [ "$MACHINE" = "qemuarmv6" ]; then
QEMUOPTIONS="$QEMUOPTIONS -cpu arm1136"
fi
if [ "$MACHINE" = "qemuarmv7" ]; then
QEMUOPTIONS="$QEMUOPTIONS -cpu cortex-a8"
fi
fi
if [ "$MACHINE" = "qemux86" ]; then
QEMU=qemu-system-i386
QEMU_UI_OPTIONS="$QEMU_UI_OPTIONS -vga vmware"
if [ "$FSTYPE" = "ext2" -o "$FSTYPE" = "ext3" -o "$FSTYPE" = "btrfs" ]; then
KERNCMDLINE="vga=0 root=$DROOT rw mem=$QEMU_MEMORY $KERNEL_NETWORK_CMD"
QEMUOPTIONS="$QEMU_NETWORK_CMD $ROOTFS_OPTIONS $QEMU_UI_OPTIONS"
fi
if [ "$FSTYPE" = "nfs" ]; then
if [ "$NFS_SERVER" = "192.168.7.1" -a ! -d "$NFS_DIR" ]; then
echo "Error: NFS mount point $ROOTFS doesn't exist."
cleanup
return 1
fi
KERNCMDLINE="root=/dev/nfs nfsroot=$NFS_SERVER:$NFS_DIR,$UNFS_OPTS rw $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
QEMUOPTIONS="$QEMU_NETWORK_CMD $QEMU_UI_OPTIONS"
fi
# Currently oprofile's event based interrupt mode doesn't work(Bug #828) in
# qemux86 and qemux86-64. We can use timer interrupt mode for now.
KERNCMDLINE="$KERNCMDLINE oprofile.timer=1"
fi
if [ "$MACHINE" = "qemux86-64" ]; then
QEMU=qemu-system-x86_64
QEMU_UI_OPTIONS="$QEMU_UI_OPTIONS -vga vmware"
if [ "$FSTYPE" = "ext3" -o "$FSTYPE" = "btrfs" ]; then
KERNCMDLINE="vga=0 root=$DROOT rw mem=$QEMU_MEMORY $KERNEL_NETWORK_CMD"
QEMUOPTIONS="$QEMU_NETWORK_CMD $ROOTFS_OPTIONS $QEMU_UI_OPTIONS"
fi
if [ "$FSTYPE" = "nfs" ]; then
if [ "x$ROOTFS" = "x" ]; then
ROOTFS=/srv/nfs/qemux86-64
fi
if [ ! -d "$ROOTFS" ]; then
echo "Error: NFS mount point $ROOTFS doesn't exist."
cleanup
return 1
fi
KERNCMDLINE="root=/dev/nfs nfsroot=$NFS_SERVER:$NFS_DIR,$UNFS_OPTS rw $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
QEMUOPTIONS="$QEMU_NETWORK_CMD $QEMU_UI_OPTIONS"
fi
# Currently oprofile's event based interrupt mode doesn't work(Bug #828) in
# qemux86 and qemux86-64. We can use timer interrupt mode for now.
KERNCMDLINE="$KERNCMDLINE oprofile.timer=1"
fi
if [ "$MACHINE" = "spitz" ]; then
QEMU=qemu-system-arm
if [ "$FSTYPE" = "ext3" -o "$FSTYPE" = "btrfs" ]; then
echo $ROOTFS
ROOTFS=`readlink -f $ROOTFS`
echo $ROOTFS
if [ ! -e "$ROOTFS.qemudisk" ]; then
echo "Adding a partition table to the ext3 image for use by QEMU, please wait..."
runqemu-addptable2image $ROOTFS $ROOTFS.qemudisk
fi
QEMUOPTIONS="$QEMU_NETWORK_CMD -M spitz -hda $ROOTFS.qemudisk -portrait"
fi
fi
if [ "$MACHINE" = "qemumips" -o "$MACHINE" = "qemumipsel" -o "$MACHINE" = "qemumips64" ]; then
case "$MACHINE" in
qemumips) QEMU=qemu-system-mips ;;
qemumipsel) QEMU=qemu-system-mipsel ;;
qemumips64) QEMU=qemu-system-mips64 ;;
esac
MACHINE_SUBTYPE=malta
QEMU_UI_OPTIONS="-vga cirrus $QEMU_UI_OPTIONS"
if [ "$FSTYPE" = "ext3" -o "$FSTYPE" = "btrfs" ]; then
#KERNCMDLINE="root=/dev/hda console=ttyS0 console=tty0 $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
KERNCMDLINE="root=/dev/hda rw console=ttyS0 console=tty $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
QEMUOPTIONS="$QEMU_NETWORK_CMD -M $MACHINE_SUBTYPE -hda $ROOTFS -no-reboot $QEMU_UI_OPTIONS"
fi
if [ "$FSTYPE" = "nfs" ]; then
if [ "$NFS_SERVER" = "192.168.7.1" -a ! -d "$NFS_DIR" ]; then
echo "Error: NFS mount point $ROOTFS doesn't exist"
cleanup
return 1
fi
KERNCMDLINE="root=/dev/nfs console=ttyS0 console=tty nfsroot=$NFS_SERVER:$NFS_DIR,$UNFS_OPTS rw $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
QEMUOPTIONS="$QEMU_NETWORK_CMD -M $MACHINE_SUBTYPE -no-reboot $QEMU_UI_OPTIONS"
fi
fi
if [ "$MACHINE" = "qemuppc" ]; then
QEMU=qemu-system-ppc
MACHINE_SUBTYPE=mac99
CPU_SUBTYPE=G4
QEMU_UI_OPTIONS="$QEMU_UI_OPTIONS"
QEMU_NETWORK_CMD="-net nic,model=pcnet $QEMU_TAP_CMD"
if [ "$FSTYPE" = "ext3" -o "$FSTYPE" = "btrfs" ]; then
KERNCMDLINE="root=/dev/hda rw console=ttyS0 console=tty $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
QEMUOPTIONS="$QEMU_NETWORK_CMD -cpu $CPU_SUBTYPE -M $MACHINE_SUBTYPE -hda $ROOTFS -no-reboot $QEMU_UI_OPTIONS"
fi
if [ "$FSTYPE" = "nfs" ]; then
if [ "$NFS_SERVER" = "192.168.7.1" -a ! -d "$NFS_DIR" ]; then
echo "Error: NFS mount point $ROOTFS doesn't exist"
cleanup
return 1
fi
KERNCMDLINE="root=/dev/nfs console=ttyS0 console=tty nfsroot=$NFS_SERVER:$NFS_DIR,$UNFS_OPTS rw $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
QEMUOPTIONS="$QEMU_NETWORK_CMD -cpu $CPU_SUBTYPE -M $MACHINE_SUBTYPE -no-reboot $QEMU_UI_OPTIONS"
fi
fi
if [ "$MACHINE" = "qemush4" ]; then
QEMU=qemu-system-sh4
MACHINE_SUBTYPE=r2d
QEMU_UI_OPTIONS="$QEMU_UI_OPTIONS"
if [ "$FSTYPE" = "ext3" -o "$FSTYPE" = "btrfs" ]; then
#KERNCMDLINE="root=/dev/hda console=ttyS0 console=tty0 $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
KERNCMDLINE="root=/dev/hda rw console=ttySC1 noiotrap earlyprintk=sh-sci.1 console=tty $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
QEMUOPTIONS="$QEMU_NETWORK_CMD -M $MACHINE_SUBTYPE -hda $ROOTFS -no-reboot $QEMU_UI_OPTIONS -monitor null -serial vc -serial stdio"
fi
if [ "$FSTYPE" = "nfs" ]; then
if [ "$NFS_SERVER" = "192.168.7.1" -a ! -d "$NFS_DIR" ]; then
echo "Error: NFS mount point $ROOTFS doesn't exist"
cleanup
return 1
fi
KERNCMDLINE="root=/dev/nfs console=ttySC1 noiotrap earlyprintk=sh-sci.1 console=tty nfsroot=$NFS_SERVER:$NFS_DIR,$UNFS_OPTS rw $KERNEL_NETWORK_CMD mem=$QEMU_MEMORY"
QEMUOPTIONS="$QEMU_NETWORK_CMD -M $MACHINE_SUBTYPE -no-reboot $QEMU_UI_OPTIONS -monitor null -serial vc -serial stdio"
fi
fi
if [ "$MACHINE" = "akita" ]; then
QEMU=qemu-system-arm
if [ "$FSTYPE" = "jffs2" ]; then
ROOTFS=`readlink -f $ROOTFS`
if [ ! -e "$ROOTFS.qemuflash" ]; then
echo "Converting raw image into flash image format for use by QEMU, please wait..."
raw2flash.akita < $ROOTFS > $ROOTFS.qemuflash
fi
QEMUOPTIONS="$QEMU_NETWORK_CMD -M akita -mtdblock $ROOTFS.qemuflash -portrait"
fi
fi
if [ "x$RAMFS" = "xtrue" ]; then
QEMUOPTIONS="-initrd $ROOTFS -nographic"
KERNCMDLINE="root=/dev/ram0"
fi
if [ "x$QEMUOPTIONS" = "x" ]; then
echo "Error: Unable to support this combination of options"
cleanup
return 1
fi
if [ "x$CROSSPATH" = "x" ]; then
PATH=$OECORE_NATIVE_SYSROOT/usr/bin:$PATH
else
PATH=$CROSSPATH:$OECORE_NATIVE_SYSROOT/usr/bin:$PATH
fi
QEMUBIN=`which $QEMU 2> /dev/null`
if [ ! -x "$QEMUBIN" ]; then
echo "Error: No QEMU binary '$QEMU' could be found."
cleanup
return 1
fi
NEED_GL=`ldd $QEMUBIN/$QEMU 2>&1 | grep libGLU`
# We can't run without a libGL.so
if [ "$NEED_GL" != "" ]; then
libgl='no'
[ -e /usr/lib/libGL.so -a -e /usr/lib/libGLU.so ] && libgl='yes'
[ -e /usr/lib64/libGL.so -a -e /usr/lib64/libGLU.so ] && libgl='yes'
[ -e /usr/lib/*-linux-gnu/libGL.so -a -e /usr/lib/*-linux-gnu/libGLU.so ] && libgl='yes'
if [ "$libgl" != 'yes' ]; then
echo "You need libGL.so and libGLU.so to exist in your library path to run the QEMU emulator.
Ubuntu package names are: libgl1-mesa-dev and libglu1-mesa-dev.
Fedora package names are: mesa-libGL-devel mesa-libGLU-devel."
return 1;
fi
fi
do_quit() {
if [ -n "$PIDFILE" ]; then
#echo kill `cat $PIDFILE`
kill `cat $PIDFILE`
fi
cleanup
return 1
}
DISTCCD=`which distccd 2> /dev/null`
PIDFILE=""
trap do_quit INT TERM QUIT
if [ -x "$DISTCCD" ]; then
echo "Starting distccd..."
PIDFILE=`mktemp`
$DISTCCD --allow 192.168.7.2 --daemon --pid-file $PIDFILE &
else
echo "WARNING: distccd not present, no distcc support loaded."
fi
# qemu got segfault if linked with nVidia's libgl
GL_LD_PRELOAD=$LD_PRELOAD
if ldd $QEMUBIN | grep -i nvidia &> /dev/null
then
cat << EOM
WARNING: nVidia proprietary OpenGL libraries detected.
nVidia's OpenGL libraries are known to have compatibility issues with qemu,
resulting in a segfault. Please uninstall these drivers or ensure the mesa libGL
libraries precede nvidia's via LD_PRELOAD(Already do it on Ubuntu 10).
EOM
# Automatically use Ubuntu system's mesa libGL, other distro can add its own path
if grep -i ubuntu /etc/lsb-release &> /dev/null
then
# precede nvidia's driver on Ubuntu 10
UBUNTU_MAIN_VERSION=`cat /etc/lsb-release |grep DISTRIB_RELEASE |cut -d= -f 2| cut -d. -f 1`
if [ "$UBUNTU_MAIN_VERSION" = "10" ];
then
GL_PATH=""
if test -e /usr/lib/libGL.so
then
GL_PATH="/usr/lib/libGL.so"
elif test -e /usr/lib/x86_64-linux-gnu/libGL.so
then
GL_PATH="/usr/lib/x86_64-linux-gnu/libGL.so"
fi
echo "Skip nVidia's libGL on Ubuntu 10!"
GL_LD_PRELOAD="$GL_PATH $LD_PRELOAD"
fi
fi
fi
echo "Running $QEMU..."
# -no-reboot is a mandatory option - see bug #100
echo $QEMUBIN -kernel $KERNEL $QEMUOPTIONS $SERIALOPTS -no-reboot $SCRIPT_QEMU_OPT $SCRIPT_QEMU_EXTRA_OPT --append '"'$KERNCMDLINE $SCRIPT_KERNEL_OPT'"'
LD_PRELOAD="$GL_LD_PRELOAD" $QEMUBIN -kernel $KERNEL $QEMUOPTIONS $SERIALOPTS -no-reboot $SCRIPT_QEMU_OPT $SCRIPT_QEMU_EXTRA_OPT --append "$KERNCMDLINE $SCRIPT_KERNEL_OPT"
ret=$?
cleanup
trap - INT TERM QUIT
return $ret
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