usage()
{
cat <<EOF
-Usage: $0 [-i] [-d <output_dir>] -- [<command>]
+Usage: $0 [-i] [-s] [-d <output_dir>] -- [<command>]
<command> is the command you would normally run when you are in
tools/testing/selftests/bpf. e.g:
$0 -- ./test_progs -t test_lsm
-If no command is specified, "${DEFAULT_COMMAND}" will be run by
-default.
+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:
-d) Update the output directory (default: ${OUTPUT_DIR})
-j) Number of jobs for compilation, similar to -j in make
(default: ${NUM_COMPILE_JOBS})
+ -s) Instead of powering off the VM, start an interactive
+ shell. If <command> is specified, the shell runs after
+ the command finishes executing
EOF
}
local init_script_dir="${OUTPUT_DIR}/${MOUNT_DIR}/etc/rcS.d"
local init_script="${init_script_dir}/S50-startup"
local command="$1"
+ local exit_command="$2"
mount_image
fi
- sudo bash -c "cat >${init_script}" <<EOF
-#!/bin/bash
+ sudo bash -c "echo '#!/bin/bash' > ${init_script}"
+ if [[ "${command}" != "" ]]; then
+ sudo bash -c "cat >>${init_script}" <<EOF
# Have a default value in the exit status file
# incase the VM is forcefully stopped.
echo "130" > "/root/${EXIT_STATUS_FILE}"
stdbuf -oL -eL ${command}
echo "\$?" > "/root/${EXIT_STATUS_FILE}"
} 2>&1 | tee "/root/${LOG_FILE}"
-poweroff -f
+# Ensure that the logs are written to disk
+sync
EOF
+ fi
+ sudo bash -c "echo ${exit_command} >> ${init_script}"
sudo chmod a+x "${init_script}"
unmount_image
}
local kernel_bzimage="${kernel_checkout}/${X86_BZIMAGE}"
local command="${DEFAULT_COMMAND}"
local update_image="no"
+ local exit_command="poweroff -f"
+ local debug_shell="no"
- while getopts 'hkid:j:' opt; do
+ while getopts 'hskid:j:' opt; do
case ${opt} in
i)
update_image="yes"
j)
NUM_COMPILE_JOBS="$OPTARG"
;;
+ s)
+ command=""
+ debug_shell="yes"
+ exit_command="bash"
+ ;;
h)
usage
exit 0
done
shift $((OPTIND -1))
- if [[ $# -eq 0 ]]; then
+ if [[ $# -eq 0 && "${debug_shell}" == "no" ]]; then
echo "No command specified, will run ${DEFAULT_COMMAND} in the vm"
else
command="$@"
fi
update_selftests "${kernel_checkout}" "${make_command}"
- update_init_script "${command}"
+ update_init_script "${command}" "${exit_command}"
run_vm "${kernel_bzimage}"
- copy_logs
- echo "Logs saved in ${OUTPUT_DIR}/${LOG_FILE}"
+ if [[ "${command}" != "" ]]; then
+ copy_logs
+ echo "Logs saved in ${OUTPUT_DIR}/${LOG_FILE}"
+ fi
}
catch()