RAMDISK_ARCHIVE=ramdisk.cpio
#GEN_INIT_CPIO=$(dirname $0)/gen_init_cpio
INITRD_DIR=initrd_content
-MODULES_LIST="virtio virtio_ring virtio_pci virtio_net virtio_net fscache 9pnet 9pnet_virtio 9p aufs"
+MODULES_LIST="virtio virtio_ring virtio_pci virtio_net virtio_net fscache 9pnet 9pnet_virtio 9p aufs overlay"
QEMU_MEMORY="-m 1024"
QEMU_KVM_ENABLE="-enable-kvm"
#QEMU_OUTPUT="-vga cirrus -serial null"
while true ; do
mkdir -p ${tgt_dir}/$(dirname ${src}) || return 1
- cp -av ${src} ${tgt_dir}/${src#/} || return 1
+ cp -av ${src} ${tgt_dir}/${src#/} || \
+ cp -v ${src} ${tgt_dir}/${src#/} || return 1
+
l=$(readlink ${src})
if [ -z "$l" ] ; then
for m in ${MODULES_LIST} ; do
mf=$(find /lib/modules/${KERNEL_VERSION} -name ${m}.ko )
- if [ -n ${mf} ] ; then
- mkdir -p ${INITRD_DIR_ABS}/$(dirname ${mf})
- cp -a ${mf} ${INITRD_DIR_ABS}/${mf#/}
+ if [ -n "${mf}" ] ; then
+ mkdir -p "${INITRD_DIR_ABS}/$(dirname ${mf})"
+ cp -a "${mf}" "${INITRD_DIR_ABS}/${mf#/}"
+ else
+ echo "Module ${m} not found"
fi
done
cat <<EOF
echo "Starting QEMU trick"
-mount -t proc none /proc
-mount -t sysfs none /sys
-mount -t tmpfs none /dev
-depmod
+if mount -t proc none /proc ; then
+ echo "mount works directly"
+ BINPR=""
+else
+ echo "trying busybox mount"
+ BINPR="/bin/busybox "
+ if ! \${BINPR}mount -t proc none /proc ; then
+ echo "mounting proc failed, cannot continue"
+ sleep 10
+ exit 1
+ fi
+fi
+\${BINPR}mount -t sysfs none /sys
+\${BINPR}mount -t tmpfs none /dev
+\${BINPR}depmod
EOF
for m in ${MODULES_LIST} ; do
echo modprobe $m
done
cat <<EOF
-mdev -s
+\${BINPR}mdev -s
if [ -e /bin/resize ] ; then
- mv /dev/tty /dev/tty-backup
- ln -s /dev/console /dev/tty
+ \${BINPR}mv /dev/tty /dev/tty-backup
+ \${BINPR}ln -s /dev/console /dev/tty
/bin/resize >/tmp/term-size
. /tmp/term-size
- stty cols \$COLUMNS rows \$LINES
- rm -f /dev/tty
- mv /dev/tty-backup /dev/tty
+ \${BINPR}stty cols \$COLUMNS rows \$LINES
+ \${BINPR}rm -f /dev/tty
+ \${BINPR}mv /dev/tty-backup /dev/tty
+fi
+\${BINPR}mount -t 9p -o ro,trans=virtio,version=9p2000.u root /mnt/rootbase
+\${BINPR}mount -t tmpfs overlay /mnt/overlay
+\${BINPR}mkdir -p /mnt/overlay/data
+
+echo "Ready to setup overlay"
+#sleep 5
+#/bin/sh
+
+if grep -q aufs /proc/filesystems ; then
+ echo "Using aufs to remap root"
+ \${BINPR}mount -n -t aufs -o noxino,noatime,dirs=/mnt/overlay/data=rw:/mnt/rootbase=ro aufs-root ${rootmnt}
+else
+ echo "Using overlay to remap root"
+ \${BINPR}mkdir -p /mnt/overlay/work
+ \${BINPR}mount -n -t overlay -o upperdir=/mnt/overlay/data,workdir=/mnt/overlay/work,lowerdir=/mnt/rootbase overlay-root ${rootmnt}
fi
-mount -t 9p -o ro,trans=virtio root /mnt/rootbase
-mount -t tmpfs overlay /mnt/overlay
-mount -n -t aufs -o dirs=/mnt/overlay=rw:/mnt/rootbase=ro unionfs ${rootmnt}
-mount -n -o move /dev ${rootmnt}/dev
-mount -n -o move /sys ${rootmnt}/sys
-mount -n -o move /proc ${rootmnt}/proc
-mount -t 9p -o trans=virtio home ${rootmnt}/home
-mount -t tmpfs none ${rootmnt}/root
-mount -t tmpfs none ${rootmnt}/tmp
-mount -t tmpfs none ${rootmnt}/run
-mount -t tmpfs none ${rootmnt}/var/log
-mount -t tmpfs none ${rootmnt}/var/tmp
-
-rm ${rootmnt}/var/lib/urandom/random-seed
-rm -rf ${rootmnt}/etc/shadow
+
+\${BINPR}mount -n -o move /dev ${rootmnt}/dev
+\${BINPR}mount -n -o move /sys ${rootmnt}/sys
+\${BINPR}mount -n -o move /proc ${rootmnt}/proc
+\${BINPR}mount -t 9p -o trans=virtio,version=9p2000.u home ${rootmnt}/home
+\${BINPR}mount -t tmpfs none ${rootmnt}/root
+\${BINPR}mount -t tmpfs none ${rootmnt}/tmp
+\${BINPR}mount -t tmpfs none ${rootmnt}/run
+\${BINPR}mount -t tmpfs none ${rootmnt}/var/log
+\${BINPR}mount -t tmpfs none ${rootmnt}/var/tmp
+
+\${BINPR}rm -f ${rootmnt}/var/lib/urandom/random-seed
+\${BINPR}rm -rf ${rootmnt}/etc/shadow
echo >${rootmnt}/etc/shadow
-rm -rf ${rootmnt}/etc/ssh
-mkdir ${rootmnt}/etc/ssh
+\${BINPR}rm -rf ${rootmnt}/etc/ssh
+\${BINPR}mkdir ${rootmnt}/etc/ssh
-rm -f ${rootmnt}/etc/rc2.d/* ${rootmnt}/etc/rc3.d/* ${rootmnt}/etc/rc4.d/* ${rootmnt}/etc/rc5.d/*
+\${BINPR}rm -f ${rootmnt}/etc/rc2.d/* ${rootmnt}/etc/rc3.d/* ${rootmnt}/etc/rc4.d/* ${rootmnt}/etc/rc5.d/*
-rm -rf ${rootmnt}/etc/fstab.d ${rootmnt}/etc/fstab
+\${BINPR}rm -rf ${rootmnt}/etc/fstab.d ${rootmnt}/etc/fstab
echo >${rootmnt}/etc/fstab
-rm -rf ${rootmnt}/var/lib/dpkg/lock ${rootmnt}/var/lib/apt/lists/lock ${rootmnt}/var/cache/apt/archives/lock
-rm -rf ${rootmnt}/etc/apt/apt.conf.d/*etckeeper ${rootmnt}/var/lib/dpkg/triggers/Lock
+\${BINPR}rm -rf ${rootmnt}/var/lib/dpkg/lock ${rootmnt}/var/lib/apt/lists/lock ${rootmnt}/var/cache/apt/archives/lock
+\${BINPR}rm -rf ${rootmnt}/etc/apt/apt.conf.d/*etckeeper ${rootmnt}/var/lib/dpkg/triggers/Lock
-rm -rf ${rootmnt}/etc/network/interfaces.d ${rootmnt}/etc/network/interfaces
+\${BINPR}rm -rf ${rootmnt}/etc/network/interfaces.d ${rootmnt}/etc/network/interfaces
echo "auto lo eth0" >${rootmnt}/etc/network/interfaces
echo "iface lo inet loopback" >>${rootmnt}/etc/network/interfaces
echo "iface eth0 inet dhcp" >>${rootmnt}/etc/network/interfaces
shell=/bin/sh
fi
-mv ${rootmnt}/etc/inittab ${rootmnt}/etc/inittab.orig
-cp ${rootmnt}/etc/inittab.orig ${rootmnt}/etc/inittab
-sed -i -e '/\/sbin\/.*getty/d' ${rootmnt}/etc/inittab
+\${BINPR}mv ${rootmnt}/etc/inittab ${rootmnt}/etc/inittab.orig
+\${BINPR}cp ${rootmnt}/etc/inittab.orig ${rootmnt}/etc/inittab
+\${BINPR}sed -i -e '/\/sbin\/.*getty/d' ${rootmnt}/etc/inittab
#echo "1:2345:respawn:/bin/sh" >>${rootmnt}/etc/inittab
#echo "T0:1234:respawn:/bin/sh" >>${rootmnt}/etc/inittab
echo "2:23:respawn:/sbin/agetty -n -l \${shell} -o '-l' tty2 38400 linux" >>${rootmnt}/etc/inittab
echo "T0:23:respawn:/sbin/agetty -n -l \${shell} -o '-l' -L ttyS0 9600 xterm" >>${rootmnt}/etc/inittab
+cd ${rootmnt}
+echo "Ready to proceed by pivot_root"
+#sleep 5
+#/bin/sh
+
+#mkdir -p ${rootmnt}/overlay/pivot
+#pivot_root . overlay/pivot
+#exec chroot . sbin/init
exec switch_root ${rootmnt} /sbin/init
EOF
function run_virt_system()
{
- $QEMU -enable-kvm -kernel ${KERNEL_IMAGE} \
+ $QEMU ${QEMU_KVM_ENABLE} \
+ -kernel ${KERNEL_IMAGE} \
-initrd ${RAMDISK_ARCHIVE} ${QEMU_MEMORY} \
-virtfs local,path=/,security_model=none,mount_tag=root \
-virtfs local,path=/home,security_model=none,mount_tag=home \
-net nic,macaddr=be:be:be:10:00:01,model=virtio,vlan=0 \
-net user,vlan=0 \
- ${QEMU_KVM_ENABLE} ${QEMU_OUTPUT}
+ ${QEMU_OUTPUT}
# -chardev can,id=canbus0,port=can0
# -device pci-can,chardev=canbus0,model=SJA1000
rm -rf ${RAMDISK_ARCHIVE} filelist ${INITRD_DIR_ABS}
}
+if [ "$(whoami)" == "root" ] ; then
+ echo "$0: !!! TOO DANGEROUS TO RUN AS ROOT !!!"
+ exit 1;
+fi
+
clean_setup || exit 1
echo "=== setup_initrd_content ==="
setup_initrd_content || exit 1
projects / pisa / qemu-utils.git / blobdiff