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#!/bin/sh
msg() {
echo "==>" $@
}
die() {
echo $@
exit 1
}
APKS=tmp/apks
image=$PWD/image
dest=$PWD/test.gz
init=init
kernel=$1
# if no kernel specified, then guess...
if [ -z "$kernel" ]; then
kernel=$(ls /lib/modules 2>/dev/null | tail -n 1)
fi
if [ ! -d /lib/modules/$kernel ]; then
die "modules dir /lib/modules/$kernel was not found"
fi
msg "Using kernel $kernel"
# create empty image dir
rm -rf "$image"
mkdir -p "$image"
# unpack busybox and deps
tar -C $image -zxf $APKS/uclibc-[0-9]*.apk
tar -C $image -zxf $APKS/busybox-[0-9]*.apk
tar -C $image -zxf $APKS/alpine-baselayout-[0-9]*.apk
tar -C $image -zxf $APKS/apk-tools-[0-9]*.apk
rm -f $image/.PKGINFO
cp $init $image
# copy kernel modules
kmods=$image/lib/modules/$kernel
mkdir -p $kmods/kernel/drivers
for i in ata block ide ieee1394 scsi cdrom usb message; do
cp -LpR /lib/modules/$kernel/kernel/drivers/$i $kmods/kernel/drivers/
done
for i in fs lib; do
cp -LpR /lib/modules/$kernel/kernel/$i $kmods/kernel/
done
depmod $kernel -b $image
# generate the image
cd $image
find . | cpio -o -H newc | gzip -9 > $dest
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