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Add kernel header update script

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This helper pulls the required kernel headers for KVM and vhost into a
specified directory. The update is triggered via

    scripts/update-linux-headers.sh LINUX_PATH

and will place the output under linux-headers/linux and linux-headers/asm-*.
It also imports the COPYING to care for headers without an explicit license.

CC: Alexander Graf <agraf@suse.de>
CC: Christoph Hellwig <hch@lst.de>
CC: Peter Maydell <peter.maydell@linaro.org>
CC: Andreas Färber <andreas.faerber@web.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Jan Kiszka 2011-06-08 18:22:17 +02:00 committed by Marcelo Tosatti
parent 42cc8fa620
commit 87fdd47668
2 changed files with 57 additions and 0 deletions
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2
linux-headers/README Normal file
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Automatically imported Linux kernel headers.
Only use scripts/update-linux-headers.sh to update!

55
scripts/update-linux-headers.sh Executable file
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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="$PWD"
fi
for arch in x86 powerpc s390; do
make -C "$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" "$output/linux-headers/asm-x86"
fi
done
rm -rf "$output/linux-headers/linux"
mkdir -p "$output/linux-headers/linux"
for header in kvm.h kvm_para.h vhost.h virtio_config.h virtio_ring.h; do
cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
done
if [ -L "$linux/source" ]; then
cp "$linux/source/COPYING" "$output/linux-headers"
else
cp "$linux/COPYING" "$output/linux-headers"
fi
rm -rf "$tmpdir"