tools/testing/selftests/filesystems/fat/run_fat_tests.sh

Source file repositories/reference/linux-study-clean/tools/testing/selftests/filesystems/fat/run_fat_tests.sh

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/filesystems/fat/run_fat_tests.sh
Extension
.sh
Size
2031 bytes
Lines
83
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Run filesystem operations tests on an 1 MiB disk image that is formatted with
# a vfat filesystem and mounted in a temporary directory using a loop device.
#
# Copyright 2022 Red Hat Inc.
# Author: Javier Martinez Canillas <javierm@redhat.com>

set -e
set -u
set -o pipefail

BASE_DIR="$(dirname $0)"
TMP_DIR="$(mktemp -d /tmp/fat_tests_tmp.XXXXXX)"
IMG_PATH="${TMP_DIR}/fat.img"
MNT_PATH="${TMP_DIR}/mnt"

cleanup()
{
    mountpoint -q "${MNT_PATH}" && unmount_image
    rm -rf "${TMP_DIR}"
}
trap cleanup SIGINT SIGTERM EXIT

create_loopback()
{
    touch "${IMG_PATH}"
    chattr +C "${IMG_PATH}" >/dev/null 2>&1 || true

    truncate -s 1M "${IMG_PATH}"
    mkfs.vfat "${IMG_PATH}" >/dev/null 2>&1
}

mount_image()
{
    mkdir -p "${MNT_PATH}"
    sudo mount -o loop "${IMG_PATH}" "${MNT_PATH}"
}

rename_exchange_test()
{
    local rename_exchange="${BASE_DIR}/rename_exchange"
    local old_path="${MNT_PATH}/old_file"
    local new_path="${MNT_PATH}/new_file"

    echo old | sudo tee "${old_path}" >/dev/null 2>&1
    echo new | sudo tee "${new_path}" >/dev/null 2>&1
    sudo "${rename_exchange}" "${old_path}" "${new_path}" >/dev/null 2>&1
    sudo sync -f "${MNT_PATH}"
    grep new "${old_path}" >/dev/null 2>&1
    grep old "${new_path}" >/dev/null 2>&1
}

rename_exchange_subdir_test()
{
    local rename_exchange="${BASE_DIR}/rename_exchange"
    local dir_path="${MNT_PATH}/subdir"
    local old_path="${MNT_PATH}/old_file"
    local new_path="${dir_path}/new_file"

    sudo mkdir -p "${dir_path}"
    echo old | sudo tee "${old_path}" >/dev/null 2>&1
    echo new | sudo tee "${new_path}" >/dev/null 2>&1
    sudo "${rename_exchange}" "${old_path}" "${new_path}" >/dev/null 2>&1
    sudo sync -f "${MNT_PATH}"
    grep new "${old_path}" >/dev/null 2>&1
    grep old "${new_path}" >/dev/null 2>&1
}

Annotation

Implementation Notes