mirror of
https://gitee.com/openharmony/third_party_libbpf
synced 2024-10-07 06:23:25 +00:00
f7ac8c0224
Signed-off-by:shuxinyi4 <shuxinyi4@h-partners.com> Signed-off-by: wenlong_12 <wenlong12@huawei.com>
83 lines
3.1 KiB
Bash
Executable File
83 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
|
|
set -eux
|
|
|
|
SANITIZER=${SANITIZER:-address}
|
|
flags="-O1 -fno-omit-frame-pointer -g -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fsanitize=$SANITIZER -fsanitize=fuzzer-no-link"
|
|
|
|
export CC=${CC:-clang}
|
|
export CFLAGS=${CFLAGS:-$flags}
|
|
|
|
export CXX=${CXX:-clang++}
|
|
export CXXFLAGS=${CXXFLAGS:-$flags}
|
|
|
|
cd "$(dirname -- "$0")/.."
|
|
|
|
export OUT=${OUT:-"$(pwd)/out"}
|
|
mkdir -p "$OUT"
|
|
|
|
export LIB_FUZZING_ENGINE=${LIB_FUZZING_ENGINE:--fsanitize=fuzzer}
|
|
|
|
# libelf is compiled with _FORTIFY_SOURCE by default and it
|
|
# isn't compatible with MSan. It was borrowed
|
|
# from https://github.com/google/oss-fuzz/pull/7422
|
|
if [[ "$SANITIZER" == memory ]]; then
|
|
CFLAGS+=" -U_FORTIFY_SOURCE"
|
|
CXXFLAGS+=" -U_FORTIFY_SOURCE"
|
|
fi
|
|
|
|
# The alignment check is turned off by default on OSS-Fuzz/CFLite so it should be
|
|
# turned on explicitly there. It was borrowed from
|
|
# https://github.com/google/oss-fuzz/pull/7092
|
|
if [[ "$SANITIZER" == undefined ]]; then
|
|
additional_ubsan_checks=alignment
|
|
UBSAN_FLAGS="-fsanitize=$additional_ubsan_checks -fno-sanitize-recover=$additional_ubsan_checks"
|
|
CFLAGS+=" $UBSAN_FLAGS"
|
|
CXXFLAGS+=" $UBSAN_FLAGS"
|
|
fi
|
|
|
|
# Ideally libbelf should be built using release tarballs available
|
|
# at https://sourceware.org/elfutils/ftp/. Unfortunately sometimes they
|
|
# fail to compile (for example, elfutils-0.185 fails to compile with LDFLAGS enabled
|
|
# due to https://bugs.gentoo.org/794601) so let's just point the script to
|
|
# commits referring to versions of libelf that actually can be built
|
|
rm -rf elfutils
|
|
git clone https://sourceware.org/git/elfutils.git
|
|
(
|
|
cd elfutils
|
|
git checkout 67a187d4c1790058fc7fd218317851cb68bb087c
|
|
git log --oneline -1
|
|
|
|
# ASan isn't compatible with -Wl,--no-undefined: https://github.com/google/sanitizers/issues/380
|
|
sed -i 's/^\(NO_UNDEFINED=\).*/\1/' configure.ac
|
|
|
|
# ASan isn't compatible with -Wl,-z,defs either:
|
|
# https://clang.llvm.org/docs/AddressSanitizer.html#usage
|
|
sed -i 's/^\(ZDEFS_LDFLAGS=\).*/\1/' configure.ac
|
|
|
|
if [[ "$SANITIZER" == undefined ]]; then
|
|
# That's basicaly what --enable-sanitize-undefined does to turn off unaligned access
|
|
# elfutils heavily relies on on i386/x86_64 but without changing compiler flags along the way
|
|
sed -i 's/\(check_undefined_val\)=[0-9]/\1=1/' configure.ac
|
|
fi
|
|
|
|
autoreconf -i -f
|
|
if ! ./configure --enable-maintainer-mode --disable-debuginfod --disable-libdebuginfod \
|
|
--disable-demangler --without-bzlib --without-lzma --without-zstd \
|
|
CC="$CC" CFLAGS="-Wno-error $CFLAGS" CXX="$CXX" CXXFLAGS="-Wno-error $CXXFLAGS" LDFLAGS="$CFLAGS"; then
|
|
cat config.log
|
|
exit 1
|
|
fi
|
|
|
|
make -C config -j$(nproc) V=1
|
|
make -C lib -j$(nproc) V=1
|
|
make -C libelf -j$(nproc) V=1
|
|
)
|
|
|
|
make -C src BUILD_STATIC_ONLY=y V=1 clean
|
|
make -C src -j$(nproc) CFLAGS="-I$(pwd)/elfutils/libelf $CFLAGS" BUILD_STATIC_ONLY=y V=1
|
|
|
|
$CC $CFLAGS -Isrc -Iinclude -Iinclude/uapi -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -c fuzz/bpf-object-fuzzer.c -o bpf-object-fuzzer.o
|
|
$CXX $CXXFLAGS $LIB_FUZZING_ENGINE bpf-object-fuzzer.o src/libbpf.a "$(pwd)/elfutils/libelf/libelf.a" -l:libz.a -o "$OUT/bpf-object-fuzzer"
|
|
|
|
cp fuzz/bpf-object-fuzzer_seed_corpus.zip "$OUT"
|