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 'linux/ioctl' \ 38 -e 'stdint' \ 39 -e 'linux/if_ether' \ 40 -e 'input-event-codes' \ 41 -e 'sys/' \ 42 -e 'pvrdma_verbs' \ 43 -e 'drm.h' \ 44 -e 'limits' \ 45 -e 'linux/const' \ 46 -e 'linux/kernel' \ 47 -e 'linux/sysinfo' \ 48 -e 'asm-generic/kvm_para' \ 49 > /dev/null 50 then 51 echo "Unexpected #include in input file $f". 52 exit 2 53 fi 54 55 header=$(basename "$f"); 56 sed -e 's/__aligned_u64/__u64 __attribute__((aligned(8)))/g' \ 57 -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \ 58 -e 's/u\([0-9][0-9]*\)/uint\1_t/g' \ 59 -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \ 60 -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \ 61 -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \ 62 -e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \ 63 -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \ 64 -e 's/__bitwise//' \ 65 -e 's/__attribute__((packed))/QEMU_PACKED/' \ 66 -e 's/__inline__/inline/' \ 67 -e 's/__BITS_PER_LONG/HOST_LONG_BITS/' \ 68 -e '/\"drm.h\"/d' \ 69 -e '/sys\/ioctl.h/d' \ 70 -e '/linux\/ioctl.h/d' \ 71 -e 's/SW_MAX/SW_MAX_/' \ 72 -e 's/atomic_t/int/' \ 73 -e 's/__kernel_long_t/long/' \ 74 -e 's/__kernel_ulong_t/unsigned long/' \ 75 -e 's/struct ethhdr/struct eth_header/' \ 76 -e '/\#define _LINUX_ETHTOOL_H/a \\n\#include "net/eth.h"' \ 77 "$f" > "$to/$header"; 78} 79 80# This will pick up non-directories too (eg "Kconfig") but we will 81# ignore them in the next loop. 82ARCHLIST=$(cd "$linux/arch" && echo *) 83 84for arch in $ARCHLIST; do 85 # Discard anything which isn't a KVM-supporting architecture 86 if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] && 87 ! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then 88 continue 89 fi 90 91 if [ "$arch" = x86 ]; then 92 arch_var=SRCARCH 93 else 94 arch_var=ARCH 95 fi 96 97 make -C "$linux" INSTALL_HDR_PATH="$tmpdir" $arch_var=$arch headers_install 98 99 rm -rf "$output/linux-headers/asm-$arch" 100 mkdir -p "$output/linux-headers/asm-$arch" 101 for header in kvm.h unistd.h bitsperlong.h mman.h; do 102 cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch" 103 done 104 105 if [ $arch = mips ]; then 106 cp "$tmpdir/include/asm/sgidefs.h" "$output/linux-headers/asm-mips/" 107 cp "$tmpdir/include/asm/unistd_o32.h" "$output/linux-headers/asm-mips/" 108 cp "$tmpdir/include/asm/unistd_n32.h" "$output/linux-headers/asm-mips/" 109 cp "$tmpdir/include/asm/unistd_n64.h" "$output/linux-headers/asm-mips/" 110 fi 111 if [ $arch = powerpc ]; then 112 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-powerpc/" 113 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-powerpc/" 114 fi 115 116 rm -rf "$output/include/standard-headers/asm-$arch" 117 mkdir -p "$output/include/standard-headers/asm-$arch" 118 if [ $arch = s390 ]; then 119 cp_portable "$tmpdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/" 120 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-s390/" 121 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-s390/" 122 fi 123 if [ $arch = arm ]; then 124 cp "$tmpdir/include/asm/unistd-eabi.h" "$output/linux-headers/asm-arm/" 125 cp "$tmpdir/include/asm/unistd-oabi.h" "$output/linux-headers/asm-arm/" 126 cp "$tmpdir/include/asm/unistd-common.h" "$output/linux-headers/asm-arm/" 127 fi 128 if [ $arch = arm64 ]; then 129 cp "$tmpdir/include/asm/sve_context.h" "$output/linux-headers/asm-arm64/" 130 fi 131 if [ $arch = x86 ]; then 132 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/" 133 cp "$tmpdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/" 134 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/" 135 cp_portable "$tmpdir/include/asm/kvm_para.h" "$output/include/standard-headers/asm-$arch" 136 # Remove everything except the macros from bootparam.h avoiding the 137 # unnecessary import of several video/ist/etc headers 138 sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \ 139 "$tmpdir/include/asm/bootparam.h" > "$tmpdir/bootparam.h" 140 cp_portable "$tmpdir/bootparam.h" \ 141 "$output/include/standard-headers/asm-$arch" 142 fi 143done 144 145rm -rf "$output/linux-headers/linux" 146mkdir -p "$output/linux-headers/linux" 147for header in kvm.h vfio.h vfio_ccw.h vfio_zdev.h vhost.h \ 148 psci.h psp-sev.h userfaultfd.h mman.h; do 149 cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux" 150done 151 152rm -rf "$output/linux-headers/asm-generic" 153mkdir -p "$output/linux-headers/asm-generic" 154for header in unistd.h bitsperlong.h mman-common.h mman.h hugetlb_encode.h; do 155 cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic" 156done 157 158if [ -L "$linux/source" ]; then 159 cp "$linux/source/COPYING" "$output/linux-headers" 160else 161 cp "$linux/COPYING" "$output/linux-headers" 162fi 163 164# Recent kernel sources split the copyright/license info into multiple 165# files, which we need to copy. This set of licenses is the set that 166# are referred to by SPDX lines in the headers we currently copy. 167# We don't copy the Documentation/process/license-rules.rst which 168# is also referred to by COPYING, since it's explanatory rather than license. 169if [ -d "$linux/LICENSES" ]; then 170 mkdir -p "$output/linux-headers/LICENSES/preferred" \ 171 "$output/linux-headers/LICENSES/exceptions" 172 for l in preferred/GPL-2.0 preferred/BSD-2-Clause preferred/BSD-3-Clause \ 173 exceptions/Linux-syscall-note; do 174 cp "$linux/LICENSES/$l" "$output/linux-headers/LICENSES/$l" 175 done 176fi 177 178cat <<EOF >$output/linux-headers/linux/virtio_config.h 179#include "standard-headers/linux/virtio_config.h" 180EOF 181cat <<EOF >$output/linux-headers/linux/virtio_ring.h 182#include "standard-headers/linux/virtio_ring.h" 183EOF 184cat <<EOF >$output/linux-headers/linux/vhost_types.h 185#include "standard-headers/linux/vhost_types.h" 186EOF 187 188rm -rf "$output/include/standard-headers/linux" 189mkdir -p "$output/include/standard-headers/linux" 190for i in "$tmpdir"/include/linux/*virtio*.h \ 191 "$tmpdir/include/linux/qemu_fw_cfg.h" \ 192 "$tmpdir/include/linux/fuse.h" \ 193 "$tmpdir/include/linux/input.h" \ 194 "$tmpdir/include/linux/input-event-codes.h" \ 195 "$tmpdir/include/linux/udmabuf.h" \ 196 "$tmpdir/include/linux/pci_regs.h" \ 197 "$tmpdir/include/linux/ethtool.h" \ 198 "$tmpdir/include/linux/const.h" \ 199 "$tmpdir/include/linux/kernel.h" \ 200 "$tmpdir/include/linux/vhost_types.h" \ 201 "$tmpdir/include/linux/sysinfo.h"; do 202 cp_portable "$i" "$output/include/standard-headers/linux" 203done 204mkdir -p "$output/include/standard-headers/drm" 205cp_portable "$tmpdir/include/drm/drm_fourcc.h" \ 206 "$output/include/standard-headers/drm" 207 208rm -rf "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma" 209mkdir -p "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma" 210 211# Remove the unused functions from pvrdma_verbs.h avoiding the unnecessary 212# import of several infiniband/networking/other headers 213tmp_pvrdma_verbs="$tmpdir/pvrdma_verbs.h" 214# Parse the entire file instead of single lines to match 215# function declarations expanding over multiple lines 216# and strip the declarations starting with pvrdma prefix. 217sed -e '1h;2,$H;$!d;g' -e 's/[^};]*pvrdma[^(| ]*([^)]*);//g' \ 218 "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h" > \ 219 "$tmp_pvrdma_verbs"; 220 221for i in "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h" \ 222 "$tmp_pvrdma_verbs"; do \ 223 cp_portable "$i" \ 224 "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/" 225done 226 227rm -rf "$output/include/standard-headers/rdma/" 228mkdir -p "$output/include/standard-headers/rdma/" 229for i in "$tmpdir/include/rdma/vmw_pvrdma-abi.h"; do 230 cp_portable "$i" \ 231 "$output/include/standard-headers/rdma/" 232done 233 234cat <<EOF >$output/include/standard-headers/linux/types.h 235/* For QEMU all types are already defined via osdep.h, so this 236 * header does not need to do anything. 237 */ 238EOF 239cat <<EOF >$output/include/standard-headers/linux/if_ether.h 240#define ETH_ALEN 6 241EOF 242 243rm -rf "$tmpdir" 244