1#!/bin/sh -e
2#
3# Update Linux kernel headers QEMU requires from a specified kernel tree.
4#
5# Copyright (C) 2011 Siemens AG
6#
7# Authors:
8#  Jan Kiszka        <jan.kiszka@siemens.com>
9#
10# This work is licensed under the terms of the GNU GPL version 2.
11# See the COPYING file in the top-level directory.
12
13tmpdir=`mktemp -d`
14linux="$1"
15output="$2"
16
17if [ -z "$linux" ] || ! [ -d "$linux" ]; then
18    cat << EOF
19usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
20
21LINUX_PATH      Linux kernel directory to obtain the headers from
22OUTPUT_PATH     output directory, usually the qemu source tree (default: $PWD)
23EOF
24    exit 1
25fi
26
27if [ -z "$output" ]; then
28    output="$PWD"
29fi
30
31for arch in x86 powerpc s390; do
32    make -C "$linux" INSTALL_HDR_PATH="$tmpdir" SRCARCH=$arch headers_install
33
34    rm -rf "$output/linux-headers/asm-$arch"
35    mkdir -p "$output/linux-headers/asm-$arch"
36    for header in kvm.h kvm_para.h; do
37        cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch"
38    done
39    if [ $arch = x86 ]; then
40        cp "$tmpdir/include/asm/hyperv.h" "$output/linux-headers/asm-x86"
41    fi
42done
43
44rm -rf "$output/linux-headers/linux"
45mkdir -p "$output/linux-headers/linux"
46for header in kvm.h kvm_para.h vhost.h virtio_config.h virtio_ring.h; do
47    cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
48done
49if [ -L "$linux/source" ]; then
50    cp "$linux/source/COPYING" "$output/linux-headers"
51else
52    cp "$linux/COPYING" "$output/linux-headers"
53fi
54
55rm -rf "$tmpdir"
56