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#!/bin/sh
# build id cache operations
# SPDX-License-Identifier: GPL-2.0
# skip if there's no readelf
if ! [ -x "$(command -v readelf)" ]; then
echo "failed: no readelf, install binutils"
exit 2
fi
# skip if there's no compiler
if ! [ -x "$(command -v cc)" ]; then
echo "failed: no compiler, install gcc"
exit 2
fi
ex_md5=$(mktemp /tmp/perf.ex.MD5.XXX)
ex_sha1=$(mktemp /tmp/perf.ex.SHA1.XXX)
echo 'int main(void) { return 0; }' | cc -Wl,--build-id=sha1 -o ${ex_sha1} -x c -
echo 'int main(void) { return 0; }' | cc -Wl,--build-id=md5 -o ${ex_md5} -x c -
echo "test binaries: ${ex_sha1} ${ex_md5}"
check()
{
id=`readelf -n ${1} 2>/dev/null | grep 'Build ID' | awk '{print $3}'`
echo "build id: ${id}"
link=${build_id_dir}/.build-id/${id:0:2}/${id:2}
echo "link: ${link}"
if [ ! -h $link ]; then
echo "failed: link ${link} does not exist"
exit 1
fi
file=${build_id_dir}/.build-id/${id:0:2}/`readlink ${link}`/elf
echo "file: ${file}"
if [ ! -x $file ]; then
echo "failed: file ${file} does not exist"
exit 1
fi
diff ${file} ${1}
if [ $? -ne 0 ]; then
echo "failed: ${file} do not match"
exit 1
fi
echo "OK for ${1}"
}
test_add()
{
build_id_dir=$(mktemp -d /tmp/perf.debug.XXX)
perf="perf --buildid-dir ${build_id_dir}"
${perf} buildid-cache -v -a ${1}
if [ $? -ne 0 ]; then
echo "failed: add ${1} to build id cache"
exit 1
fi
check ${1}
rm -rf ${build_id_dir}
}
test_record()
{
data=$(mktemp /tmp/perf.data.XXX)
build_id_dir=$(mktemp -d /tmp/perf.debug.XXX)
perf="perf --buildid-dir ${build_id_dir}"
${perf} record --buildid-all -o ${data} ${1}
if [ $? -ne 0 ]; then
echo "failed: record ${1}"
exit 1
fi
check ${1}
rm -rf ${build_id_dir}
rm -rf ${data}
}
# add binaries manual via perf buildid-cache -a
test_add ${ex_sha1}
test_add ${ex_md5}
# add binaries via perf record post processing
test_record ${ex_sha1}
test_record ${ex_md5}
# cleanup
rm ${ex_sha1} ${ex_md5}
exit ${err}
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