1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3 #
4 # Run filesystem operations tests on an 1 MiB disk image that is formatted with
5 # a vfat filesystem and mounted in a temporary directory using a loop device.
6 #
7 # Copyright 2022 Red Hat Inc.
8 # Author: Javier Martinez Canillas <javierm@redhat.com>
9
10 set -e
11 set -u
12 set -o pipefail
13
14 BASE_DIR="$(dirname $0)"
15 TMP_DIR="$(mktemp -d /tmp/fat_tests_tmp.XXXXXX)"
16 IMG_PATH="${TMP_DIR}/fat.img"
17 MNT_PATH="${TMP_DIR}/mnt"
18
19 cleanup()
20 {
21 mountpoint -q "${MNT_PATH}" && unmount_image
22 rm -rf "${TMP_DIR}"
23 }
24 trap cleanup SIGINT SIGTERM EXIT
25
26 create_loopback()
27 {
28 touch "${IMG_PATH}"
29 chattr +C "${IMG_PATH}" >/dev/null 2>&1 || true
30
31 truncate -s 1M "${IMG_PATH}"
32 mkfs.vfat "${IMG_PATH}" >/dev/null 2>&1
33 }
34
35 mount_image()
36 {
37 mkdir -p "${MNT_PATH}"
38 sudo mount -o loop "${IMG_PATH}" "${MNT_PATH}"
39 }
40
41 rename_exchange_test()
42 {
43 local rename_exchange="${BASE_DIR}/rename_exchange"
44 local old_path="${MNT_PATH}/old_file"
45 local new_path="${MNT_PATH}/new_file"
46
47 echo old | sudo tee "${old_path}" >/dev/null 2>&1
48 echo new | sudo tee "${new_path}" >/dev/null 2>&1
49 sudo "${rename_exchange}" "${old_path}" "${new_path}" >/dev/null 2>&1
50 sudo sync -f "${MNT_PATH}"
51 grep new "${old_path}" >/dev/null 2>&1
52 grep old "${new_path}" >/dev/null 2>&1
53 }
54
55 rename_exchange_subdir_test()
56 {
57 local rename_exchange="${BASE_DIR}/rename_exchange"
58 local dir_path="${MNT_PATH}/subdir"
59 local old_path="${MNT_PATH}/old_file"
60 local new_path="${dir_path}/new_file"
61
62 sudo mkdir -p "${dir_path}"
63 echo old | sudo tee "${old_path}" >/dev/null 2>&1
64 echo new | sudo tee "${new_path}" >/dev/null 2>&1
65 sudo "${rename_exchange}" "${old_path}" "${new_path}" >/dev/null 2>&1
66 sudo sync -f "${MNT_PATH}"
67 grep new "${old_path}" >/dev/null 2>&1
68 grep old "${new_path}" >/dev/null 2>&1
69 }
70
71 unmount_image()
72 {
73 sudo umount "${MNT_PATH}" &> /dev/null
74 }
75
76 create_loopback
77 mount_image
78 rename_exchange_test
79 rename_exchange_subdir_test
80 unmount_image
81
82 exit 0
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