LXR qemu/scripts/update-linux-headers.sh

   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
  31cp_portable() {
  32    f=$1
  33    to=$2
  34    if
  35        grep '#include' "$f" | grep -v -e 'linux/virtio' \
  36                                     -e 'linux/types' \
  37                                     -e 'stdint' \
  38                                     -e 'linux/if_ether' \
  39                                     -e 'input-event-codes' \
  40                                     -e 'sys/' \
  41                                     -e 'pvrdma_verbs' \
  42                                     -e 'drm.h' \
  43                                     -e 'limits' \
  44                                     -e 'linux/kernel' \
  45                                     -e 'linux/sysinfo' \
  46                                     -e 'asm-generic/kvm_para' \
  47                                     > /dev/null
  48    then
  49        echo "Unexpected #include in input file $f".
  50        exit 2
  51    fi
  52
  53    header=$(basename "$f");
  54    sed -e 's/__aligned_u64/__u64 __attribute__((aligned(8)))/g' \
  55        -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
  56        -e 's/u\([0-9][0-9]*\)/uint\1_t/g' \
  57        -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
  58        -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
  59        -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
  60        -e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \
  61        -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
  62        -e 's/__bitwise//' \
  63        -e 's/__attribute__((packed))/QEMU_PACKED/' \
  64        -e 's/__inline__/inline/' \
  65        -e 's/__BITS_PER_LONG/HOST_LONG_BITS/' \
  66        -e '/\"drm.h\"/d' \
  67        -e '/sys\/ioctl.h/d' \
  68        -e 's/SW_MAX/SW_MAX_/' \
  69        -e 's/atomic_t/int/' \
  70        -e 's/__kernel_long_t/long/' \
  71        -e 's/__kernel_ulong_t/unsigned long/' \
  72        -e 's/struct ethhdr/struct eth_header/' \
  73        -e '/\#define _LINUX_ETHTOOL_H/a \\n\#include "net/eth.h"' \
  74        "$f" > "$to/$header";
  75}
  76
  77# This will pick up non-directories too (eg "Kconfig") but we will
  78# ignore them in the next loop.
  79ARCHLIST=$(cd "$linux/arch" && echo *)
  80
  81for arch in $ARCHLIST; do
  82    # Discard anything which isn't a KVM-supporting architecture
  83    if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] &&
  84        ! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then
  85        continue
  86    fi
  87
  88    if [ "$arch" = x86 ]; then
  89        arch_var=SRCARCH
  90    else
  91        arch_var=ARCH
  92    fi
  93
  94    make -C "$linux" INSTALL_HDR_PATH="$tmpdir" $arch_var=$arch headers_install
  95
  96    rm -rf "$output/linux-headers/asm-$arch"
  97    mkdir -p "$output/linux-headers/asm-$arch"
  98    for header in kvm.h unistd.h bitsperlong.h mman.h; do
  99        cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch"
 100    done
 101
 102    if [ $arch = mips ]; then
 103        cp "$tmpdir/include/asm/sgidefs.h" "$output/linux-headers/asm-mips/"
 104        cp "$tmpdir/include/asm/unistd_o32.h" "$output/linux-headers/asm-mips/"
 105        cp "$tmpdir/include/asm/unistd_n32.h" "$output/linux-headers/asm-mips/"
 106        cp "$tmpdir/include/asm/unistd_n64.h" "$output/linux-headers/asm-mips/"
 107    fi
 108    if [ $arch = powerpc ]; then
 109        cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-powerpc/"
 110        cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-powerpc/"
 111    fi
 112
 113    rm -rf "$output/include/standard-headers/asm-$arch"
 114    mkdir -p "$output/include/standard-headers/asm-$arch"
 115    if [ $arch = s390 ]; then
 116        cp_portable "$tmpdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/"
 117        cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-s390/"
 118        cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-s390/"
 119    fi
 120    if [ $arch = arm ]; then
 121        cp "$tmpdir/include/asm/unistd-eabi.h" "$output/linux-headers/asm-arm/"
 122        cp "$tmpdir/include/asm/unistd-oabi.h" "$output/linux-headers/asm-arm/"
 123        cp "$tmpdir/include/asm/unistd-common.h" "$output/linux-headers/asm-arm/"
 124    fi
 125    if [ $arch = arm64 ]; then
 126        cp "$tmpdir/include/asm/sve_context.h" "$output/linux-headers/asm-arm64/"
 127    fi
 128    if [ $arch = x86 ]; then
 129        cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/"
 130        cp "$tmpdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/"
 131        cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/"
 132        cp_portable "$tmpdir/include/asm/kvm_para.h" "$output/include/standard-headers/asm-$arch"
 133        # Remove everything except the macros from bootparam.h avoiding the
 134        # unnecessary import of several video/ist/etc headers
 135        sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \
 136               "$tmpdir/include/asm/bootparam.h" > "$tmpdir/bootparam.h"
 137        cp_portable "$tmpdir/bootparam.h" \
 138                    "$output/include/standard-headers/asm-$arch"
 139    fi
 140done
 141
 142rm -rf "$output/linux-headers/linux"
 143mkdir -p "$output/linux-headers/linux"
 144for header in kvm.h vfio.h vfio_ccw.h vhost.h \
 145              psci.h psp-sev.h userfaultfd.h mman.h; do
 146    cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
 147done
 148
 149rm -rf "$output/linux-headers/asm-generic"
 150mkdir -p "$output/linux-headers/asm-generic"
 151for header in unistd.h bitsperlong.h mman-common.h mman.h hugetlb_encode.h; do
 152    cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
 153done
 154
 155if [ -L "$linux/source" ]; then
 156    cp "$linux/source/COPYING" "$output/linux-headers"
 157else
 158    cp "$linux/COPYING" "$output/linux-headers"
 159fi
 160
 161# Recent kernel sources split the copyright/license info into multiple
 162# files, which we need to copy. This set of licenses is the set that
 163# are referred to by SPDX lines in the headers we currently copy.
 164# We don't copy the Documentation/process/license-rules.rst which
 165# is also referred to by COPYING, since it's explanatory rather than license.
 166if [ -d "$linux/LICENSES" ]; then
 167    mkdir -p "$output/linux-headers/LICENSES/preferred" \
 168             "$output/linux-headers/LICENSES/exceptions"
 169    for l in preferred/GPL-2.0 preferred/BSD-2-Clause preferred/BSD-3-Clause \
 170             exceptions/Linux-syscall-note; do
 171        cp "$linux/LICENSES/$l" "$output/linux-headers/LICENSES/$l"
 172    done
 173fi
 174
 175cat <<EOF >$output/linux-headers/linux/virtio_config.h
 176#include "standard-headers/linux/virtio_config.h"
 177EOF
 178cat <<EOF >$output/linux-headers/linux/virtio_ring.h
 179#include "standard-headers/linux/virtio_ring.h"
 180EOF
 181cat <<EOF >$output/linux-headers/linux/vhost_types.h
 182#include "standard-headers/linux/vhost_types.h"
 183EOF
 184
 185rm -rf "$output/include/standard-headers/linux"
 186mkdir -p "$output/include/standard-headers/linux"
 187for i in "$tmpdir"/include/linux/*virtio*.h \
 188         "$tmpdir/include/linux/qemu_fw_cfg.h" \
 189         "$tmpdir/include/linux/input.h" \
 190         "$tmpdir/include/linux/input-event-codes.h" \
 191         "$tmpdir/include/linux/pci_regs.h" \
 192         "$tmpdir/include/linux/ethtool.h" "$tmpdir/include/linux/kernel.h" \
 193         "$tmpdir/include/linux/vhost_types.h" \
 194         "$tmpdir/include/linux/sysinfo.h"; do
 195    cp_portable "$i" "$output/include/standard-headers/linux"
 196done
 197mkdir -p "$output/include/standard-headers/drm"
 198cp_portable "$tmpdir/include/drm/drm_fourcc.h" \
 199            "$output/include/standard-headers/drm"
 200
 201rm -rf "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
 202mkdir -p "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
 203
 204# Remove the unused functions from pvrdma_verbs.h avoiding the unnecessary
 205# import of several infiniband/networking/other headers
 206tmp_pvrdma_verbs="$tmpdir/pvrdma_verbs.h"
 207# Parse the entire file instead of single lines to match
 208# function declarations expanding over multiple lines
 209# and strip the declarations starting with pvrdma prefix.
 210sed  -e '1h;2,$H;$!d;g'  -e 's/[^};]*pvrdma[^(| ]*([^)]*);//g' \
 211    "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h" > \
 212    "$tmp_pvrdma_verbs";
 213
 214for i in "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h" \
 215         "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h" \
 216         "$tmp_pvrdma_verbs"; do \
 217    cp_portable "$i" \
 218         "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/"
 219done
 220
 221rm -rf "$output/include/standard-headers/rdma/"
 222mkdir -p "$output/include/standard-headers/rdma/"
 223for i in "$tmpdir/include/rdma/vmw_pvrdma-abi.h"; do
 224    cp_portable "$i" \
 225         "$output/include/standard-headers/rdma/"
 226done
 227
 228cat <<EOF >$output/include/standard-headers/linux/types.h
 229/* For QEMU all types are already defined via osdep.h, so this
 230 * header does not need to do anything.
 231 */
 232EOF
 233cat <<EOF >$output/include/standard-headers/linux/if_ether.h
 234#define ETH_ALEN    6
 235EOF
 236
 237rm -rf "$tmpdir"
 238