2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2016 Red Hat Inc. All Rights Reserved.
7 # Test overlayfs basic whiteout.
9 # Overlayfs whiteout can be visible if underlying upper fs does not
10 # support d_type. Kernel commit
11 # 45aebea (ovl: Ensure upper filesystem supports d_type)
12 # prevents mounting overlayfs like this since v4.6-rc1.
13 # No harm to keep this test as a sanity check.
16 seqres=$RESULT_DIR/$seq
17 echo "QA output created by $seq"
21 status=1 # failure is the default!
22 trap "_cleanup; exit \$status" 0 1 2 3 15
30 # get standard environment, filters and checks
34 # remove previous $seqres.full before test
37 # real QA test starts here
39 # Modify as appropriate.
44 # Remove all files from previous tests
47 # Create test files dirs in lower dir
48 lowerdir=${OVL_BASE_SCRATCH_MNT}/${OVL_LOWER}
51 touch ${lowerdir}/test_file
52 ln -s ${lowerdir}/test_file ${lowerdir}/test_softlink_file
53 ln ${lowerdir}/test_file ${lowerdir}/test_hardlink_file
55 mkdir -p ${lowerdir}/test_dir
56 ln -s ${lowerdir}/test_dir ${lowerdir}/test_softlink_dir
58 mknod ${lowerdir}/test_cdev c 2 3
59 ln -s ${lowerdir}/test_cdev ${lowerdir}/test_softlink_cdev
60 ln ${lowerdir}/test_cdev ${lowerdir}/test_hardlink_cdev
62 mknod ${lowerdir}/test_bdev b 2 4
63 ln -s ${lowerdir}/test_bdev ${lowerdir}/test_softlink_bdev
64 ln ${lowerdir}/test_bdev ${lowerdir}/test_hardlink_bdev
66 mknod ${lowerdir}/test_pipe p
67 ln -s ${lowerdir}/test_pipe ${lowerdir}/test_softlink_pipe
68 ln ${lowerdir}/test_pipe ${lowerdir}/test_hardlink_pipe
72 # whiteout all files in overlay mountpoint
73 rm -rf ${SCRATCH_MNT}/*
74 # nothing should be listed
77 # unmount overlayfs but not base fs
78 $UMOUNT_PROG $SCRATCH_MNT
80 echo "Silence is golden"