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b4fe9fec51
Currently, ima_setup.sh spews outputs from commands like mkfs and dd
on the terminal without taking into account the verbosity level of
the test framework. Update test_progs to set the environment variable
SELFTESTS_VERBOSE=1 when a verbose output is requested. This
environment variable is then used by ima_setup.sh (and can be used by
other similar scripts) to obey the verbosity level of the test harness
without needing to re-implement command line options for verbosity.
In "silent" mode, the script saves the output to a temporary file, the
contents of which are echoed back to stderr when the script encounters
an error.
Fixes: 34b82d3ac1 ("bpf: Add a selftest for bpf_ima_inode_hash")
Reported-by: Andrii Nakryiko <andrii@kernel.org>
Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20201211010711.3716917-1-kpsingh@kernel.org
123 lines
2.5 KiB
Bash
Executable file
123 lines
2.5 KiB
Bash
Executable file
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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set -e
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set -u
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set -o pipefail
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IMA_POLICY_FILE="/sys/kernel/security/ima/policy"
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TEST_BINARY="/bin/true"
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VERBOSE="${SELFTESTS_VERBOSE:=0}"
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LOG_FILE="$(mktemp /tmp/ima_setup.XXXX.log)"
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usage()
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{
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echo "Usage: $0 <setup|cleanup|run> <existing_tmp_dir>"
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exit 1
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}
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ensure_mount_securityfs()
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{
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local securityfs_dir=$(grep "securityfs" /proc/mounts | awk '{print $2}')
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if [ -z "${securityfs_dir}" ]; then
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securityfs_dir=/sys/kernel/security
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mount -t securityfs security "${securityfs_dir}"
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fi
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if [ ! -d "${securityfs_dir}" ]; then
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echo "${securityfs_dir}: securityfs is not mounted" && exit 1
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fi
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}
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setup()
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{
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local tmp_dir="$1"
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local mount_img="${tmp_dir}/test.img"
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local mount_dir="${tmp_dir}/mnt"
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local copied_bin_path="${mount_dir}/$(basename ${TEST_BINARY})"
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mkdir -p ${mount_dir}
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dd if=/dev/zero of="${mount_img}" bs=1M count=10
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losetup -f "${mount_img}"
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local loop_device=$(losetup -a | grep ${mount_img:?} | cut -d ":" -f1)
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mkfs.ext2 "${loop_device:?}"
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mount "${loop_device}" "${mount_dir}"
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cp "${TEST_BINARY}" "${mount_dir}"
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local mount_uuid="$(blkid ${loop_device} | sed 's/.*UUID="\([^"]*\)".*/\1/')"
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ensure_mount_securityfs
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echo "measure func=BPRM_CHECK fsuuid=${mount_uuid}" > ${IMA_POLICY_FILE}
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}
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cleanup() {
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local tmp_dir="$1"
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local mount_img="${tmp_dir}/test.img"
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local mount_dir="${tmp_dir}/mnt"
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local loop_devices=$(losetup -a | grep ${mount_img:?} | cut -d ":" -f1)
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for loop_dev in "${loop_devices}"; do
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losetup -d $loop_dev
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done
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umount ${mount_dir}
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rm -rf ${tmp_dir}
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}
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run()
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{
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local tmp_dir="$1"
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local mount_dir="${tmp_dir}/mnt"
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local copied_bin_path="${mount_dir}/$(basename ${TEST_BINARY})"
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exec "${copied_bin_path}"
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}
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catch()
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{
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local exit_code="$1"
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local log_file="$2"
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if [[ "${exit_code}" -ne 0 ]]; then
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cat "${log_file}" >&3
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fi
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rm -f "${log_file}"
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exit ${exit_code}
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}
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main()
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{
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[[ $# -ne 2 ]] && usage
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local action="$1"
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local tmp_dir="$2"
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[[ ! -d "${tmp_dir}" ]] && echo "Directory ${tmp_dir} doesn't exist" && exit 1
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if [[ "${action}" == "setup" ]]; then
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setup "${tmp_dir}"
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elif [[ "${action}" == "cleanup" ]]; then
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cleanup "${tmp_dir}"
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elif [[ "${action}" == "run" ]]; then
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run "${tmp_dir}"
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else
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echo "Unknown action: ${action}"
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exit 1
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fi
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}
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trap 'catch "$?" "${LOG_FILE}"' EXIT
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if [[ "${VERBOSE}" -eq 0 ]]; then
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# Save the stderr to 3 so that we can output back to
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# it incase of an error.
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exec 3>&2 1>"${LOG_FILE}" 2>&1
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fi
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main "$@"
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rm -f "${LOG_FILE}"
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