fuzz: use qemu_get_exec_dir
[qemu.git] / 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
13 tmpdir=$(mktemp -d)
14 linux="$1"
15 output="$2"
16
17 if [ -z "$linux" ] || ! [ -d "$linux" ]; then
18 cat << EOF
19 usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH]
20
21 LINUX_PATH Linux kernel directory to obtain the headers from
22 OUTPUT_PATH output directory, usually the qemu source tree (default: $PWD)
23 EOF
24 exit 1
25 fi
26
27 if [ -z "$output" ]; then
28 output="$PWD"
29 fi
30
31 cp_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/$header";
75 }
76
77 # This will pick up non-directories too (eg "Kconfig") but we will
78 # ignore them in the next loop.
79 ARCHLIST=$(cd "$linux/arch" && echo *)
80
81 for 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-$arch"
139 fi
140 done
141
142 rm -rf "$output/linux-headers/linux"
143 mkdir -p "$output/linux-headers/linux"
144 for header in kvm.h vfio.h vfio_ccw.h vhost.h \
145 psci.h psp-sev.h userfaultfd.h mman.h; do
146 cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
147 done
148
149 rm -rf "$output/linux-headers/asm-generic"
150 mkdir -p "$output/linux-headers/asm-generic"
151 for header in unistd.h bitsperlong.h mman-common.h mman.h hugetlb_encode.h; do
152 cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
153 done
154
155 if [ -L "$linux/source" ]; then
156 cp "$linux/source/COPYING" "$output/linux-headers"
157 else
158 cp "$linux/COPYING" "$output/linux-headers"
159 fi
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.
166 if [ -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/$l"
172 done
173 fi
174
175 cat <<EOF >$output/linux-headers/linux/virtio_config.h
176 #include "standard-headers/linux/virtio_config.h"
177 EOF
178 cat <<EOF >$output/linux-headers/linux/virtio_ring.h
179 #include "standard-headers/linux/virtio_ring.h"
180 EOF
181 cat <<EOF >$output/linux-headers/linux/vhost_types.h
182 #include "standard-headers/linux/vhost_types.h"
183 EOF
184
185 rm -rf "$output/include/standard-headers/linux"
186 mkdir -p "$output/include/standard-headers/linux"
187 for i in "$tmpdir"/include/linux/*virtio*.h \
188 "$tmpdir/include/linux/qemu_fw_cfg.h" \
189 "$tmpdir/include/linux/fuse.h" \
190 "$tmpdir/include/linux/input.h" \
191 "$tmpdir/include/linux/input-event-codes.h" \
192 "$tmpdir/include/linux/pci_regs.h" \
193 "$tmpdir/include/linux/ethtool.h" "$tmpdir/include/linux/kernel.h" \
194 "$tmpdir/include/linux/vhost_types.h" \
195 "$tmpdir/include/linux/sysinfo.h"; do
196 cp_portable "$i" "$output/include/standard-headers/linux"
197 done
198 mkdir -p "$output/include/standard-headers/drm"
199 cp_portable "$tmpdir/include/drm/drm_fourcc.h" \
200 "$output/include/standard-headers/drm"
201
202 rm -rf "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
203 mkdir -p "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
204
205 # Remove the unused functions from pvrdma_verbs.h avoiding the unnecessary
206 # import of several infiniband/networking/other headers
207 tmp_pvrdma_verbs="$tmpdir/pvrdma_verbs.h"
208 # Parse the entire file instead of single lines to match
209 # function declarations expanding over multiple lines
210 # and strip the declarations starting with pvrdma prefix.
211 sed -e '1h;2,$H;$!d;g' -e 's/[^};]*pvrdma[^(| ]*([^)]*);//g' \
212 "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h" > \
213 "$tmp_pvrdma_verbs";
214
215 for i in "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h" \
216 "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h" \
217 "$tmp_pvrdma_verbs"; do \
218 cp_portable "$i" \
219 "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/"
220 done
221
222 rm -rf "$output/include/standard-headers/rdma/"
223 mkdir -p "$output/include/standard-headers/rdma/"
224 for i in "$tmpdir/include/rdma/vmw_pvrdma-abi.h"; do
225 cp_portable "$i" \
226 "$output/include/standard-headers/rdma/"
227 done
228
229 cat <<EOF >$output/include/standard-headers/linux/types.h
230 /* For QEMU all types are already defined via osdep.h, so this
231 * header does not need to do anything.
232 */
233 EOF
234 cat <<EOF >$output/include/standard-headers/linux/if_ether.h
235 #define ETH_ALEN 6
236 EOF
237
238 rm -rf "$tmpdir"