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#!/bin/sh -e
#
# Update Linux kernel headers QEMU requires from a specified kernel tree.
#
# Copyright (C) 2011 Siemens AG
#
# Authors:
# Jan Kiszka <jan.kiszka@siemens.com>
#
# This work is licensed under the terms of the GNU GPL version 2.
# See the COPYING file in the top-level directory.
tmpdir=`mktemp -d`
linux="$1"
output="$2"
if [ -z "$linux" ] || ! [ -d "$linux" ]; then
cat << EOF
usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
LINUX_PATH Linux kernel directory to obtain the headers from
OUTPUT_PATH output directory, usually the qemu source tree (default: $PWD)
EOF
exit 1
fi
if [ -z "$output" ]; then
output="$PWD"
fi
cp_virtio() {
from=$1
to=$2
virtio=$(find "$from" -name '*virtio*h' -o -name "input.h" -o -name "pci_regs.h")
if [ "$virtio" ]; then
rm -rf "$to"
mkdir -p "$to"
for f in $virtio; do
if
grep '#include' "$f" | grep -v -e 'linux/virtio' \
-e 'linux/types' \
-e 'linux/if_ether' \
-e 'sys/' \
> /dev/null
then
echo "Unexpected #include in input file $f".
exit 2
fi
header=$(basename "$f");
sed -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
-e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
-e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
-e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
-e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
-e 's/__bitwise__//' \
-e 's/__attribute__((packed))/QEMU_PACKED/' \
-e 's/__inline__/inline/' \
-e '/sys\/ioctl.h/d' \
"$f" > "$to/$header";
done
fi
}
# This will pick up non-directories too (eg "Kconfig") but we will
# ignore them in the next loop.
ARCHLIST=$(cd "$linux/arch" && echo *)
for arch in $ARCHLIST; do
# Discard anything which isn't a KVM-supporting architecture
if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] &&
! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then
continue
fi
# Blacklist architectures which have KVM headers but are actually dead
if [ "$arch" = "ia64" ]; then
continue
fi
make -C "$linux" INSTALL_HDR_PATH="$tmpdir" SRCARCH=$arch headers_install
rm -rf "$output/linux-headers/asm-$arch"
mkdir -p "$output/linux-headers/asm-$arch"
for header in kvm.h kvm_para.h; do
cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch"
done
if [ $arch = x86 ]; then
cp "$tmpdir/include/asm/hyperv.h" "$output/linux-headers/asm-x86"
fi
if [ $arch = powerpc ]; then
cp "$tmpdir/include/asm/epapr_hcalls.h" "$output/linux-headers/asm-powerpc/"
fi
cp_virtio "$tmpdir/include/asm" "$output/include/standard-headers/asm-$arch"
done
rm -rf "$output/linux-headers/linux"
mkdir -p "$output/linux-headers/linux"
for header in kvm.h kvm_para.h vfio.h vhost.h \
psci.h; do
cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
done
rm -rf "$output/linux-headers/asm-generic"
mkdir -p "$output/linux-headers/asm-generic"
for header in kvm_para.h; do
cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
done
if [ -L "$linux/source" ]; then
cp "$linux/source/COPYING" "$output/linux-headers"
else
cp "$linux/COPYING" "$output/linux-headers"
fi
cat <<EOF >$output/linux-headers/linux/virtio_config.h
#include "standard-headers/linux/virtio_config.h"
EOF
cat <<EOF >$output/linux-headers/linux/virtio_ring.h
#include "standard-headers/linux/virtio_ring.h"
EOF
cp_virtio "$tmpdir/include/linux/" "$output/include/standard-headers/linux"
cat <<EOF >$output/include/standard-headers/linux/types.h
#include <stdint.h>
#include "qemu/compiler.h"
EOF
cat <<EOF >$output/include/standard-headers/linux/if_ether.h
#define ETH_ALEN 6
EOF
rm -rf "$tmpdir"
|
