qemu/scripts/update-linux-headers.sh

1 #!/bin/sh -e
3 # Update Linux kernel headers QEMU requires from a specified kernel tree.
11 # See the COPYING file in the top-level directory.
15 # - linux-headers/ for files that are required for compiling for a
21 # - include/standard-headers/ for files that are used for guest
26 #   sanitize the headers to remove any use of Linux-specifics such as
29 tmpdir=$(mktemp -d)
32 linux="$1"
35 if [ -z "$linux" ] || ! [ -d "$linux" ]; then
37 usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
42     exit 1
45 if [ -z "$output" ]; then
50     f=$1
53         grep '#include' "$f" | grep -v -e 'linux/virtio' \
54                                      -e 'linux/types' \
55                                      -e 'linux/ioctl' \
56                                      -e 'stdint' \
57                                      -e 'linux/if_ether' \
58                                      -e 'input-event-codes' \
59                                      -e 'sys/' \
60                                      -e 'drm.h' \
61                                      -e 'limits' \
62                                      -e 'linux/const' \
63                                      -e 'linux/kernel' \
64                                      -e 'linux/sysinfo' \
65                                      -e 'asm/setup_data.h' \
66                                      -e 'asm/kvm_para.h' \
75     if test -z "$arch"; then
76         # Let users of include/standard-headers/linux/ headers pick the
77         # asm-* header that they care about
80         arch_cmd='s/<asm\/\([^>]*\)>/"standard-headers\/asm-'$arch'\/\1"/'
83     sed -e 's/__aligned_u64/__u64 __attribute__((aligned(8)))/g' \
84         -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
85         -e 's/u\([0-9][0-9]*\)/uint\1_t/g' \
86         -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
87         -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
88         -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
89         -e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \
90         -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
91         -e "$arch_cmd" \
92         -e 's/__bitwise//' \
93         -e 's/__attribute__((packed))/QEMU_PACKED/' \
94         -e 's/__inline__/inline/' \
95         -e 's/__BITS_PER_LONG/HOST_LONG_BITS/' \
96         -e '/\"drm.h\"/d' \
97         -e '/sys\/ioctl.h/d' \
98         -e '/linux\/ioctl.h/d' \
99         -e 's/SW_MAX/SW_MAX_/' \
100         -e 's/atomic_t/int/' \
101         -e 's/__kernel_long_t/long/' \
102         -e 's/__kernel_ulong_t/unsigned long/' \
103         -e 's/struct ethhdr/struct eth_header/' \
104         -e '/\#define _LINUX_ETHTOOL_H/a \\n\#include "net/eth.h"' \
108 # This will pick up non-directories too (eg "Kconfig") but we will
113     # Discard anything which isn't a KVM-supporting architecture
114     if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] &&
115         ! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then
125     rm -rf "$hdrdir"
126     make -C "$linux" O="$blddir" INSTALL_HDR_PATH="$hdrdir" $arch_var=$arch headers_install
128     rm -rf "$output/linux-headers/asm-$arch"
129     mkdir -p "$output/linux-headers/asm-$arch"
131         if test -f "$hdrdir/include/asm/$header"; then
132             cp "$hdrdir/include/asm/$header" "$output/linux-headers/asm-$arch"
133         elif test -f "$hdrdir/include/asm-generic/$header"; then
135             cat <<EOF >$output/linux-headers/asm-$arch/$header
136 #include <asm-generic/$header>
142         cp "$hdrdir/include/asm/sgidefs.h" "$output/linux-headers/asm-mips/"
143         cp "$hdrdir/include/asm/unistd_o32.h" "$output/linux-headers/asm-mips/"
144         cp "$hdrdir/include/asm/unistd_n32.h" "$output/linux-headers/asm-mips/"
145         cp "$hdrdir/include/asm/unistd_n64.h" "$output/linux-headers/asm-mips/"
148         cp "$hdrdir/include/asm/unistd_32.h" "$output/linux-headers/asm-powerpc/"
149         cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-powerpc/"
152     rm -rf "$output/include/standard-headers/asm-$arch"
153     mkdir -p "$output/include/standard-headers/asm-$arch"
155         cp_portable "$hdrdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/"
156         cp "$hdrdir/include/asm/unistd_32.h" "$output/linux-headers/asm-s390/"
157         cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-s390/"
160         cp "$hdrdir/include/asm/unistd-eabi.h" "$output/linux-headers/asm-arm/"
161         cp "$hdrdir/include/asm/unistd-oabi.h" "$output/linux-headers/asm-arm/"
162         cp "$hdrdir/include/asm/unistd-common.h" "$output/linux-headers/asm-arm/"
165         cp "$hdrdir/include/asm/sve_context.h" "$output/linux-headers/asm-arm64/"
166         cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-arm64/"
169         cp "$hdrdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/"
170         cp "$hdrdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/"
171         cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/"
173         cp_portable "$hdrdir/include/asm/kvm_para.h" "$output/include/standard-headers/asm-$arch"
174         cat <<EOF >$output/linux-headers/asm-$arch/kvm_para.h
175 #include "standard-headers/asm-$arch/kvm_para.h"
180         sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \
183                     "$output/include/standard-headers/asm-$arch"
185                     "$output/include/standard-headers/asm-x86"
188         cp "$hdrdir/include/asm/ptrace.h" "$output/linux-headers/asm-riscv/"
189         cp "$hdrdir/include/asm/unistd_32.h" "$output/linux-headers/asm-riscv/"
190         cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-riscv/"
193         cp "$hdrdir/include/asm/kvm_para.h" "$output/linux-headers/asm-loongarch/"
194         cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-loongarch/"
199 rm -rf "$output/linux-headers/linux"
200 mkdir -p "$output/linux-headers/linux"
202               psci.h psp-sev.h userfaultfd.h memfd.h mman.h nvme_ioctl.h \
204     cp "$hdrdir/include/linux/$header" "$output/linux-headers/linux"
207 rm -rf "$output/linux-headers/asm-generic"
208 mkdir -p "$output/linux-headers/asm-generic"
209 for header in unistd.h bitsperlong.h mman-common.h mman.h hugetlb_encode.h; do
210     cp "$hdrdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
213 if [ -L "$linux/source" ]; then
214     cp "$linux/source/COPYING" "$output/linux-headers"
216     cp "$linux/COPYING" "$output/linux-headers"
222 # We don't copy the Documentation/process/license-rules.rst which
224 if [ -d "$linux/LICENSES" ]; then
225     mkdir -p "$output/linux-headers/LICENSES/preferred" \
226              "$output/linux-headers/LICENSES/exceptions"
227     for l in preferred/GPL-2.0 preferred/BSD-2-Clause preferred/BSD-3-Clause \
228              exceptions/Linux-syscall-note; do
229         cp "$linux/LICENSES/$l" "$output/linux-headers/LICENSES/$l"
233 cat <<EOF >$output/linux-headers/linux/kvm_para.h
234 #include "standard-headers/linux/kvm_para.h"
237 cat <<EOF >$output/linux-headers/linux/virtio_config.h
238 #include "standard-headers/linux/virtio_config.h"
240 cat <<EOF >$output/linux-headers/linux/virtio_ring.h
241 #include "standard-headers/linux/virtio_ring.h"
243 cat <<EOF >$output/linux-headers/linux/vhost_types.h
244 #include "standard-headers/linux/vhost_types.h"
247 rm -rf "$output/include/standard-headers/linux"
248 mkdir -p "$output/include/standard-headers/linux"
253          "$hdrdir/include/linux/input-event-codes.h" \
262     cp_portable "$i" "$output/include/standard-headers/linux"
264 mkdir -p "$output/include/standard-headers/misc"
266             "$output/include/standard-headers/misc"
267 mkdir -p "$output/include/standard-headers/drm"
269             "$output/include/standard-headers/drm"
271 cat <<EOF >$output/include/standard-headers/linux/types.h
276 cat <<EOF >$output/include/standard-headers/linux/if_ether.h
280 rm -rf "$tmpdir"