qemu qcow2 format kernel testing image

.gitignore

linux.img
.lock
record
.gdbinit

boot.sh

#!/bin/bash

source `pwd`/config.sh
while [[ $# -gt 0 ]]; do
    eval "$1"
    shift
done

if [[ -f $LOCK_FILE ]]; then
    echo "$LOCK_FILE existing, abort..."
    exit 1
fi
touch $LOCK_FILE

pid_file=`env mktemp --suffix=.pid`
comm=`mktemp`

function append {
    printf "%s" "$* " >>$comm
}

function boot {
    append qemu-system-x86_64
    append $ACCEL
    append -drive file=$IMAGE_FILE,if=$HD_DRV
    append -net nic,model=$NET_DRV
    append -net user,hostfwd=::$REDIR_PORT-10.0.2.1:22
    append -s
    append -device virtio-serial-pci
    append -m $MEM_SIZE  -cpu $CPU_TYPE -smp $SMP
    append -nodefaults -display none -vga qxl -pidfile $pid_file
    append -usb
    if [[ -v MONITOR ]]; then
    append -monitor telnet:127.0.0.1:$MONITOR,server,nowait
    fi
    if [[ -v EXTRA ]]; then
    append "$EXTRA"
    fi

    if [[ $SERIAL == pty ]]; then
        append -device virtserialport,chardev=spicechannel0,name=com.redhat.spice.0
        append -chardev spicevmc,id=spicechannel0,name=vdagent
        append -spice port=$SPICE_PORT,addr=127.0.0.1,disable-ticketing,ipv4
        append -daemonize -serial pty
        append '2>&1 | grep -o "/dev/pts/[0-9]\+"'
    elif [[ $SERIAL == stdio ]]; then
        append -serial stdio
    else
        echo 'abort...'
        exit 1
    fi
    evil="$(cat $comm)"
    rm $comm
    eval "$evil"
}

if [[ $SERIAL == pty ]]; then
    ptyfile=`boot $@`
    if (( $? != 0 )); then
        exit 1
    fi
    qemu_pid=`cat $pid_file`
    trap "kill $qemu_pid; rm -f $PID_FILE $LOCK_FILE" EXIT
    trap "kill $qemu_pid; rm -f $PID_FILE $LOCK_FILE" HUP
    screen $ptyfile
    read i
    rm $pid_file
elif [[ $SERIAL == stdio ]]; then
    trap "rm -f $PID_FILE $LOCK_FILE" EXIT
    trap "rm -f $PID_FILE $LOCK_FILE" HUP
    boot "$@"
    rm $pid_file
fi

config.sh

#!/bin/sh

NET_DRV=virtio # virtio|e1000
HD_DRV=virtio # ide|scsi|virtio
MEM_SIZE=128m
CPU_TYPE=host
SMP=2
ACCEL=--enable-kvm
SERIAL=pty
MONITOR=8849
#EXTRA="-device usb-host,vendorid=0xf055,productid=0xcec5"
#EXTRA="-device usb-avrk,id=usb-avrk0,filename=avrk0"

IMAGE_FILE=linux.img
if [[ ! -f $IMAGE_FILE ]]; then
    tmp_file=`mktemp`
    git show origin/image:linux.qcow2 > $tmp_file
    qemu-img convert $tmp_file $IMAGE_FILE
    rm $tmp_file
fi

REDIR_PORT=60022
WORK_DIR=fs_root
KERNEL_WORKDIR=../qemu/
KERNEL_SRCDIR=../../linux/3.16
MODULE_DIR_A=../avr
LOCK_FILE=.lock
SPICE_PORT=33777

MODULE_DIR=`[[ -d $MODULE_DIR_A ]] && cd $MODULE_DIR_A && pwd`

if [[ $# == 1 ]]; then
    if [[ $1 == "MODULE_DIR" ]]; then
        echo $MODULE_DIR
    fi
fi

gdb_init.sh

#!/bin/bash

source `pwd`/config.sh
mod_file=`find $MODULE_DIR/*.ko -print`
mod_name=`basename $mod_file | sed -e 's/\.ko$//'`
total="`./ssh.sh cat /sys/module/$mod_name/sections/.{text,data}`"
text=`echo $total | awk '{print $1}'`
#bss=`echo $total | awk '{print $2}'`
data=`echo $total | awk '{print $2}'`

cat > .gdbinit <<EOF
    file $KERNEL_WORKDIR/vmlinux
    add-symbol-file $mod_file $text -s .data $data
    target remote :1234
EOF
cgdb

#expect <(echo "spawn gdb -q
    #expect \"(gdb) \"
    #send \"file $KERNEL_WORKDIR/vmlinux\r\"
    #send \"add-symbol-file $mod_file $text -s .data $data \r\"
    #send \"target remote :1234\r\"
#interact")

#echo "target remote :1234"

gui.sh

#!/bin/sh

source `pwd`/config.sh
setsid spicec -h localhost --port $SPICE_PORT &

install.sh

#!/bin/sh

source `pwd`/config.sh
#rsync -ve "ssh -p $REDIR_PORT" $KERNEL_WORKDIR/arch/x86/boot/bzImage  [email protected]:/boot/bzImage

if [[ -d $MODULE_DIR_A ]]; then
    modfile_name=$(basename `find $MODULE_DIR/ -name '*.ko' -print` 2>/dev/null)
    if [[ ! -z "$modfile_name" ]]; then
        scp -P $REDIR_PORT $MODULE_DIR/$modfile_name  [email protected]:
        ./ssh.sh 'touch /lib/modules/`uname -r`/modules.{order,builtin}'
        ./ssh.sh "install $modfile_name "'-D /lib/modules/`uname -r`/'"$modfile_name; depmod -A;"
        ./ssh.sh '$HOME/.local/bin/reload '"$modfile_name; rm $modfile_name"
    fi
fi

make.sh

#!/bin/sh

source `pwd`/config.sh
if [[ -d ../repo/linus/include/config ]]; then
    rmdir  ../repo/linus/include/config
fi

first=`echo "$KERNEL_WORKDIR" | sed -e 's/^\(.\).*$/\1/'`
if [[ $first == . ]]; then
    KERNEL_WORKDIR="$PWD/$KERNEL_WORKDIR"
fi

make -C $KERNEL_SRCDIR O=$KERNEL_WORKDIR "$@"

Makefile

mod_dir=`./config.sh MODULE_DIR`

all: mod

kernel:
	./make.sh

kernel-install: kernel
	./install.sh kernel

mod:
	./make.sh M=$(mod_dir)

edit:
	vim $(mod_dir)

install:
	./ssh.sh "echo 'new module:$(mod_dir) from host...' >/dev/kmsg"
	./install.sh

monitor.sh

#!/bin/sh

source `pwd`/config.sh
telnet 127.0.0.1 "$MONITOR"

mount.sh

#!/bin/bash

# ./mount.sh m  => mount image $WORK_DIR
# ./mount.sh um => umount $WORK_DIR and cleanup
# ./mount => mount, chroot and finally umount

source `pwd`/config.sh
if [[ -f $LOCK_FILE ]]; then
    echo "$LOCK_FILE existing, abort..."
    exit 1
fi
touch $LOCK_FILE


function l {
    echo "map loop device ..."
    sudo losetup /dev/loop1 $IMAGE_FILE
    sudo kpartx -a /dev/loop1
}

function ul {
    echo "unload loop device..."
    sudo kpartx -d /dev/loop1
    sudo losetup -d /dev/loop1
    rm -f $LOCK_FILE
}

function m {
    l
    echo "mount ..."
    mkdir -p $WORK_DIR
    sudo mount -t ext4 /dev/mapper/loop1p2  $WORK_DIR
    #sudo mount -t squashfs  -o loop,ro $WORK_DIR/usr.squashfs $WORK_DIR/usr
    sudo mount --bind  /dev $WORK_DIR/dev
    sudo mount -t devpts devpts $WORK_DIR/dev/pts
    sudo mount -t proc proc $WORK_DIR/proc
    sudo mount -t sysfs sysfs $WORK_DIR/sys
    sudo mount -t tmpfs shm $WORK_DIR/dev/shm
}

function c {
    echo "chroot ..."
    sudo chroot $WORK_DIR /bin/sh -c 'cd ~; /bin/bash'
}

function um {
    echo "umount ..."
    sudo umount $WORK_DIR/sys
    sudo umount $WORK_DIR/proc
    sudo umount $WORK_DIR/dev/pts
    sudo umount $WORK_DIR/dev/shm
    sudo umount $WORK_DIR/dev
    #sudo umount $WORK_DIR/usr
    sudo umount $WORK_DIR
    ul
    rmdir $WORK_DIR
}

function dump_image {
    l
    sudo fsck /dev/mapper/loop1p2
    sudo zerofree /dev/mapper/loop1p2
    sudo fsck /dev/mapper/loop1p2
    ul
    qemu-img convert  -c -p -o compat=1.1 -O qcow2 linux.img linux.qcow2
}

if [[ $# == 0 ]]; then
    m && c; um
elif [[ "$1" == "l" ]]; then
    l
elif [[ "$1" == "m" ]]; then
    m
elif [[ "$1" == "um" ]]; then
    um
elif [[ "$1" == "ul" ]]; then
    ul
elif [[ "$1" == "d" ]]; then
    dump_image
fi

spawn.sh

#!/bin/sh

screen -d -m -S kernel ./boot.sh "$@"
screen -d -r -S kernel -X shell ./ssh.sh
(sleep 5; screen -d -r -S kernel -X screen ./monitor.sh; screen -r -d -S kernel -X select 1) &
screen -r kernel

ssh.sh

#!/bin/sh

source `pwd`/config.sh
ssh [email protected] -p $REDIR_PORT "$@"