238 lines
9.1 KiB
Bash
238 lines
9.1 KiB
Bash
#!/bin/sh -e
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#
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# Update Linux kernel headers QEMU requires from a specified kernel tree.
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#
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# Copyright (C) 2011 Siemens AG
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#
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# Authors:
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# Jan Kiszka <jan.kiszka@siemens.com>
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#
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# This work is licensed under the terms of the GNU GPL version 2.
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# See the COPYING file in the top-level directory.
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tmpdir=$(mktemp -d)
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linux="$1"
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output="$2"
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if [ -z "$linux" ] || ! [ -d "$linux" ]; then
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cat << EOF
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usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
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LINUX_PATH Linux kernel directory to obtain the headers from
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OUTPUT_PATH output directory, usually the qemu source tree (default: $PWD)
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EOF
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exit 1
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fi
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if [ -z "$output" ]; then
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output="$PWD"
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fi
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cp_portable() {
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f=$1
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to=$2
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if
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grep '#include' "$f" | grep -v -e 'linux/virtio' \
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-e 'linux/types' \
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-e 'stdint' \
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-e 'linux/if_ether' \
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-e 'input-event-codes' \
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-e 'sys/' \
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-e 'pvrdma_verbs' \
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-e 'drm.h' \
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-e 'limits' \
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-e 'linux/kernel' \
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-e 'linux/sysinfo' \
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-e 'asm-generic/kvm_para' \
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> /dev/null
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then
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echo "Unexpected #include in input file $f".
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exit 2
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fi
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header=$(basename "$f");
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sed -e 's/__aligned_u64/__u64 __attribute__((aligned(8)))/g' \
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-e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/u\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
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-e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \
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-e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
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-e 's/__bitwise//' \
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-e 's/__attribute__((packed))/QEMU_PACKED/' \
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-e 's/__inline__/inline/' \
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-e 's/__BITS_PER_LONG/HOST_LONG_BITS/' \
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-e '/\"drm.h\"/d' \
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-e '/sys\/ioctl.h/d' \
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-e 's/SW_MAX/SW_MAX_/' \
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-e 's/atomic_t/int/' \
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-e 's/__kernel_long_t/long/' \
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-e 's/__kernel_ulong_t/unsigned long/' \
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-e 's/struct ethhdr/struct eth_header/' \
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-e '/\#define _LINUX_ETHTOOL_H/a \\n\#include "net/eth.h"' \
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"$f" > "$to/$header";
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}
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# This will pick up non-directories too (eg "Kconfig") but we will
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# ignore them in the next loop.
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ARCHLIST=$(cd "$linux/arch" && echo *)
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for arch in $ARCHLIST; do
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# Discard anything which isn't a KVM-supporting architecture
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if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] &&
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! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then
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continue
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fi
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if [ "$arch" = x86 ]; then
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arch_var=SRCARCH
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else
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arch_var=ARCH
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fi
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make -C "$linux" INSTALL_HDR_PATH="$tmpdir" $arch_var=$arch headers_install
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rm -rf "$output/linux-headers/asm-$arch"
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mkdir -p "$output/linux-headers/asm-$arch"
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for header in kvm.h unistd.h bitsperlong.h mman.h; do
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cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch"
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done
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if [ $arch = mips ]; then
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cp "$tmpdir/include/asm/sgidefs.h" "$output/linux-headers/asm-mips/"
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cp "$tmpdir/include/asm/unistd_o32.h" "$output/linux-headers/asm-mips/"
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cp "$tmpdir/include/asm/unistd_n32.h" "$output/linux-headers/asm-mips/"
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cp "$tmpdir/include/asm/unistd_n64.h" "$output/linux-headers/asm-mips/"
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fi
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if [ $arch = powerpc ]; then
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cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-powerpc/"
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cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-powerpc/"
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fi
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rm -rf "$output/include/standard-headers/asm-$arch"
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mkdir -p "$output/include/standard-headers/asm-$arch"
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if [ $arch = s390 ]; then
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cp_portable "$tmpdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/"
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cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-s390/"
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cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-s390/"
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fi
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if [ $arch = arm ]; then
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cp "$tmpdir/include/asm/unistd-eabi.h" "$output/linux-headers/asm-arm/"
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cp "$tmpdir/include/asm/unistd-oabi.h" "$output/linux-headers/asm-arm/"
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cp "$tmpdir/include/asm/unistd-common.h" "$output/linux-headers/asm-arm/"
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fi
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if [ $arch = arm64 ]; then
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cp "$tmpdir/include/asm/sve_context.h" "$output/linux-headers/asm-arm64/"
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fi
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if [ $arch = x86 ]; then
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cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/"
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cp "$tmpdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/"
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cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/"
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cp_portable "$tmpdir/include/asm/kvm_para.h" "$output/include/standard-headers/asm-$arch"
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# Remove everything except the macros from bootparam.h avoiding the
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# unnecessary import of several video/ist/etc headers
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sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \
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"$tmpdir/include/asm/bootparam.h" > "$tmpdir/bootparam.h"
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cp_portable "$tmpdir/bootparam.h" \
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"$output/include/standard-headers/asm-$arch"
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fi
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done
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rm -rf "$output/linux-headers/linux"
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mkdir -p "$output/linux-headers/linux"
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for header in kvm.h vfio.h vfio_ccw.h vhost.h \
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psci.h psp-sev.h userfaultfd.h mman.h; do
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cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
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done
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rm -rf "$output/linux-headers/asm-generic"
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mkdir -p "$output/linux-headers/asm-generic"
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for header in unistd.h bitsperlong.h mman-common.h mman.h hugetlb_encode.h; do
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cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
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done
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if [ -L "$linux/source" ]; then
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cp "$linux/source/COPYING" "$output/linux-headers"
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else
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cp "$linux/COPYING" "$output/linux-headers"
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fi
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# Recent kernel sources split the copyright/license info into multiple
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# files, which we need to copy. This set of licenses is the set that
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# are referred to by SPDX lines in the headers we currently copy.
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# We don't copy the Documentation/process/license-rules.rst which
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# is also referred to by COPYING, since it's explanatory rather than license.
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if [ -d "$linux/LICENSES" ]; then
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mkdir -p "$output/linux-headers/LICENSES/preferred" \
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"$output/linux-headers/LICENSES/exceptions"
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for l in preferred/GPL-2.0 preferred/BSD-2-Clause preferred/BSD-3-Clause \
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exceptions/Linux-syscall-note; do
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cp "$linux/LICENSES/$l" "$output/linux-headers/LICENSES/$l"
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done
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fi
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cat <<EOF >$output/linux-headers/linux/virtio_config.h
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#include "standard-headers/linux/virtio_config.h"
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EOF
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cat <<EOF >$output/linux-headers/linux/virtio_ring.h
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#include "standard-headers/linux/virtio_ring.h"
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EOF
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cat <<EOF >$output/linux-headers/linux/vhost_types.h
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#include "standard-headers/linux/vhost_types.h"
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EOF
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rm -rf "$output/include/standard-headers/linux"
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mkdir -p "$output/include/standard-headers/linux"
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for i in "$tmpdir"/include/linux/*virtio*.h \
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"$tmpdir/include/linux/qemu_fw_cfg.h" \
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"$tmpdir/include/linux/fuse.h" \
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"$tmpdir/include/linux/input.h" \
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"$tmpdir/include/linux/input-event-codes.h" \
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"$tmpdir/include/linux/pci_regs.h" \
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"$tmpdir/include/linux/ethtool.h" "$tmpdir/include/linux/kernel.h" \
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"$tmpdir/include/linux/vhost_types.h" \
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"$tmpdir/include/linux/sysinfo.h"; do
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cp_portable "$i" "$output/include/standard-headers/linux"
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done
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mkdir -p "$output/include/standard-headers/drm"
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cp_portable "$tmpdir/include/drm/drm_fourcc.h" \
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"$output/include/standard-headers/drm"
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rm -rf "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
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mkdir -p "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
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# Remove the unused functions from pvrdma_verbs.h avoiding the unnecessary
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# import of several infiniband/networking/other headers
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tmp_pvrdma_verbs="$tmpdir/pvrdma_verbs.h"
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# Parse the entire file instead of single lines to match
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# function declarations expanding over multiple lines
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# and strip the declarations starting with pvrdma prefix.
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sed -e '1h;2,$H;$!d;g' -e 's/[^};]*pvrdma[^(| ]*([^)]*);//g' \
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"$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h" > \
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"$tmp_pvrdma_verbs";
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for i in "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h" \
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"$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h" \
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"$tmp_pvrdma_verbs"; do \
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cp_portable "$i" \
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"$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/"
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done
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rm -rf "$output/include/standard-headers/rdma/"
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mkdir -p "$output/include/standard-headers/rdma/"
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for i in "$tmpdir/include/rdma/vmw_pvrdma-abi.h"; do
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cp_portable "$i" \
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"$output/include/standard-headers/rdma/"
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done
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cat <<EOF >$output/include/standard-headers/linux/types.h
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/* For QEMU all types are already defined via osdep.h, so this
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* header does not need to do anything.
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*/
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EOF
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cat <<EOF >$output/include/standard-headers/linux/if_ether.h
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#define ETH_ALEN 6
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EOF
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rm -rf "$tmpdir"
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