#!/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_portable() { f=$1 to=$2 if grep '#include' "$f" | grep -v -e 'linux/virtio' \ -e 'linux/types' \ -e 'stdint' \ -e 'linux/if_ether' \ -e 'input-event-codes' \ -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/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \ -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' \ -e 's/SW_MAX/SW_MAX_/' \ "$f" > "$to/$header"; } # This will pick up non-directories too (eg "Kconfig") but we will # ignore them in the next loop. ARCHLIST=$(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" -o "$arch" = "mips" ]; then continue fi make -C "$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 unistd.h; do cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch" done if [ $arch = powerpc ]; then cp "$tmpdir/include/asm/epapr_hcalls.h" "$output/linux-headers/asm-powerpc/" fi rm -rf "$output/include/standard-headers/asm-$arch" mkdir -p "$output/include/standard-headers/asm-$arch" if [ $arch = s390 ]; then cp_portable "$tmpdir/include/asm/kvm_virtio.h" "$output/include/standard-headers/asm-s390/" cp_portable "$tmpdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/" fi if [ $arch = x86 ]; then cp_portable "$tmpdir/include/asm/hyperv.h" "$output/include/standard-headers/asm-x86/" cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/" cp "$tmpdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/" cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/" fi done rm -rf "$output/linux-headers/linux" mkdir -p "$output/linux-headers/linux" for header in kvm.h kvm_para.h vfio.h vhost.h \ psci.h userfaultfd.h; do cp "$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 >$output/linux-headers/asm-x86/hyperv.h #include "standard-headers/asm-x86/hyperv.h" EOF cat <<EOF >$output/linux-headers/linux/virtio_config.h #include "standard-headers/linux/virtio_config.h" EOF cat <<EOF >$output/linux-headers/linux/virtio_ring.h #include "standard-headers/linux/virtio_ring.h" EOF rm -rf "$output/include/standard-headers/linux" mkdir -p "$output/include/standard-headers/linux" for i in "$tmpdir"/include/linux/*virtio*.h "$tmpdir/include/linux/input.h" \ "$tmpdir/include/linux/input-event-codes.h" \ "$tmpdir/include/linux/pci_regs.h"; do cp_portable "$i" "$output/include/standard-headers/linux" done cat <<EOF >$output/include/standard-headers/linux/types.h /* For QEMU all types are already defined via osdep.h, so this * header does not need to do anything. */ EOF cat <<EOF >$output/include/standard-headers/linux/if_ether.h #define ETH_ALEN 6 EOF rm -rf "$tmpdir"