#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
set -u
set -e
# This script currently only works for x86_64
ARCH="$(uname -m)"
case "${ARCH}" in
x86_64)
QEMU_BINARY=qemu-system-x86_64
BZIMAGE="arch/x86/boot/bzImage"
;;
*)
echo "Unsupported architecture"
exit 1
;;
esac
SCRIPT_DIR="$(dirname $(realpath $0))"
OUTPUT_DIR="$SCRIPT_DIR/results"
KCONFIG_REL_PATHS=("${SCRIPT_DIR}/config" "${SCRIPT_DIR}/config.common" "${SCRIPT_DIR}/config.${ARCH}")
B2C_URL="https://gitlab.freedesktop.org/gfx-ci/boot2container/-/raw/main/vm2c.py"
NUM_COMPILE_JOBS="$(nproc)"
LOG_FILE_BASE="$(date +"hid_selftests.%Y-%m-%d_%H-%M-%S")"
LOG_FILE="${LOG_FILE_BASE}.log"
EXIT_STATUS_FILE="${LOG_FILE_BASE}.exit_status"
CONTAINER_IMAGE="registry.freedesktop.org/bentiss/hid/fedora/39:2023-11-22.1"
TARGETS="${TARGETS:=$(basename ${SCRIPT_DIR})}"
DEFAULT_COMMAND="pip3 install hid-tools; make -C tools/testing/selftests TARGETS=${TARGETS} run_tests"
usage()
{
cat <<EOF
Usage: $0 [-j N] [-s] [-b] [-d <output_dir>] -- [<command>]
<command> is the command you would normally run when you are in
the source kernel direcory. e.g:
$0 -- ./tools/testing/selftests/hid/hid_bpf
If no command is specified and a debug shell (-s) is not requested,
"${DEFAULT_COMMAND}" will be run by default.
If you build your kernel using KBUILD_OUTPUT= or O= options, these
can be passed as environment variables to the script:
O=<kernel_build_path> $0 -- ./tools/testing/selftests/hid/hid_bpf
or
KBUILD_OUTPUT=<kernel_build_path> $0 -- ./tools/testing/selftests/hid/hid_bpf
Options:
-u) Update the boot2container script to a newer version.
-d) Update the output directory (default: ${OUTPUT_DIR})
-b) Run only the build steps for the kernel and the selftests
-j) Number of jobs for compilation, similar to -j in make
(default: ${NUM_COMPILE_JOBS})
-s) Instead of powering off the VM, start an interactive
shell. If <command> is specified, the shell runs after
the command finishes executing
EOF
}
download()
{
local file="$1"
echo "Downloading $file..." >&2
curl -Lsf "$file" -o "${@:2}"
}
recompile_kernel()
{
local kernel_checkout="$1"
local make_command="$2"
cd "${kernel_checkout}"
${make_command} olddefconfig
${make_command} headers
${make_command}
}
update_selftests()
{
local kernel_checkout="$1"
local selftests_dir="${kernel_checkout}/tools/testing/selftests/hid"
cd "${selftests_dir}"
${make_command}
}
run_vm()
{
local run_dir="$1"
local b2c="$2"
local kernel_bzimage="$3"
local command="$4"
local post_command=""
cd "${run_dir}"
if ! which "${QEMU_BINARY}" &> /dev/null; then
cat <<EOF
Could not find ${QEMU_BINARY}
Please install qemu or set the QEMU_BINARY environment variable.
EOF
exit 1
fi
# alpine (used in post-container requires the PATH to have /bin
export PATH=$PATH:/bin
if [[ "${debug_shell}" != "yes" ]]
then
touch ${OUTPUT_DIR}/${LOG_FILE}
command="mount bpffs -t bpf /sys/fs/bpf/; set -o pipefail ; ${command} 2>&1 | tee ${OUTPUT_DIR}/${LOG_FILE}"
post_command="cat ${OUTPUT_DIR}/${LOG_FILE}"
else
command="mount bpffs -t bpf /sys/fs/bpf/; ${command}"
fi
set +e
$b2c --command "${command}" \
--kernel ${kernel_bzimage} \
--workdir ${OUTPUT_DIR} \
--image ${CONTAINER_IMAGE}
echo $? > ${OUTPUT_DIR}/${EXIT_STATUS_FILE}
set -e
${post_command}
}
is_rel_path()
{
local path="$1"
[[ ${path:0:1} != "/" ]]
}
do_update_kconfig()
{
local kernel_checkout="$1"
local kconfig_file="$2"
rm -f "$kconfig_file" 2> /dev/null
for config in "${KCONFIG_REL_PATHS[@]}"; do
local kconfig_src="${config}"
cat "$kconfig_src" >> "$kconfig_file"
done
}
update_kconfig()
{
local kernel_checkout="$1"
local kconfig_file="$2"
if [[ -f "${kconfig_file}" ]]; then
local local_modified="$(stat -c %Y "${kconfig_file}")"
for config in "${KCONFIG_REL_PATHS[@]}"; do
local kconfig_src="${config}"
local src_modified="$(stat -c %Y "${kconfig_src}")"
# Only update the config if it has been updated after the
# previously cached config was created. This avoids
# unnecessarily compiling the kernel and selftests.
if [[ "${src_modified}" -gt "${local_modified}" ]]; then
do_update_kconfig "$kernel_checkout" "$kconfig_file"
# Once we have found one outdated configuration
# there is no need to check other ones.
break
fi
done
else
do_update_kconfig "$kernel_checkout" "$kconfig_file"
fi
}
main()
{
local script_dir="$(cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
local kernel_checkout=$(realpath "${script_dir}"/../../../../)
# By default the script searches for the kernel in the checkout directory but
# it also obeys environment variables O= and KBUILD_OUTPUT=
local kernel_bzimage="${kernel_checkout}/${BZIMAGE}"
local command="${DEFAULT_COMMAND}"
local update_b2c="no"
local debug_shell="no"
local build_only="no"
while getopts ':hsud:j:b' opt; do
case ${opt} in
u)
update_b2c="yes"
;;
d)
OUTPUT_DIR="$OPTARG"
;;
j)
NUM_COMPILE_JOBS="$OPTARG"
;;
s)
command="/bin/sh"
debug_shell="yes"
;;
b)
build_only="yes"
;;
h)
usage
exit 0
;;
\? )
echo "Invalid Option: -$OPTARG"
usage
exit 1
;;
: )
echo "Invalid Option: -$OPTARG requires an argument"
usage
exit 1
;;
esac
done
shift $((OPTIND -1))
# trap 'catch "$?"' EXIT
if [[ "${build_only}" == "no" && "${debug_shell}" == "no" ]]; then
if [[ $# -eq 0 ]]; then
echo "No command specified, will run ${DEFAULT_COMMAND} in the vm"
else
command="$@"
if [[ "${command}" == "/bin/bash" || "${command}" == "bash" ]]
then
debug_shell="yes"
fi
fi
fi
local kconfig_file="${OUTPUT_DIR}/latest.config"
local make_command="make -j ${NUM_COMPILE_JOBS} KCONFIG_CONFIG=${kconfig_file}"
# Figure out where the kernel is being built.
# O takes precedence over KBUILD_OUTPUT.
if [[ "${O:=""}" != "" ]]; then
if is_rel_path "${O}"; then
O="$(realpath "${PWD}/${O}")"
fi
kernel_bzimage="${O}/${BZIMAGE}"
make_command="${make_command} O=${O}"
elif [[ "${KBUILD_OUTPUT:=""}" != "" ]]; then
if is_rel_path "${KBUILD_OUTPUT}"; then
KBUILD_OUTPUT="$(realpath "${PWD}/${KBUILD_OUTPUT}")"
fi
kernel_bzimage="${KBUILD_OUTPUT}/${BZIMAGE}"
make_command="${make_command} KBUILD_OUTPUT=${KBUILD_OUTPUT}"
fi
local b2c="${OUTPUT_DIR}/vm2c.py"
echo "Output directory: ${OUTPUT_DIR}"
mkdir -p "${OUTPUT_DIR}"
update_kconfig "${kernel_checkout}" "${kconfig_file}"
recompile_kernel "${kernel_checkout}" "${make_command}"
update_selftests "${kernel_checkout}" "${make_command}"
if [[ "${build_only}" == "no" ]]; then
if [[ "${update_b2c}" == "no" && ! -f "${b2c}" ]]; then
echo "vm2c script not found in ${b2c}"
update_b2c="yes"
fi
if [[ "${update_b2c}" == "yes" ]]; then
download $B2C_URL $b2c
chmod +x $b2c
fi
run_vm "${kernel_checkout}" $b2c "${kernel_bzimage}" "${command}"
if [[ "${debug_shell}" != "yes" ]]; then
echo "Logs saved in ${OUTPUT_DIR}/${LOG_FILE}"
fi
exit $(cat ${OUTPUT_DIR}/${EXIT_STATUS_FILE})
fi
}
main "$@"
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