mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
58937c3f24
Overlayfs introduces some complexity with regards to what path we have to use to shut down the scratch filesystem: it's SCRATCH_MNT for regular filesystems, but it's OVL_BASE_SCRATCH_MNT (i.e. the lower mount of the overlay) if overlayfs is enabled. The helper works through all that, so we might as well use it. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
144 lines
3.7 KiB
Bash
Executable File
144 lines
3.7 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2009 Christoph Hellwig.
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#
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# FS QA Test No. 050
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#
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# Check out various mount/remount/unmount scenarious on a read-only blockdev.
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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_cleanup()
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{
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cd /
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blockdev --setrw $SCRATCH_DEV
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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_supported_fs generic
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_supported_os Linux
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_require_scratch_nocheck
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_require_scratch_shutdown
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_require_local_device $SCRATCH_DEV
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_require_norecovery
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_scratch_mkfs >/dev/null 2>&1
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filter_ro_mount() {
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local arg=""
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if [ -n "$expect_mount_failure" ]; then
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arg="s|mount: $SCRATCH_MNT: permission denied|mount: device write-protected, mounting read-only|g"
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fi
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sed -e "$arg" | _filter_ro_mount
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}
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# Mounting with quota on XFS requires a writable fs, which means
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# we expect to fail the ro blockdev test with with EPERM.
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expect_mount_failure=
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if [ "$FSTYP" = "xfs" ] && echo "$MOUNT_OPTIONS" | grep -q quota ; then
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expect_mount_failure=1
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fi
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#
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# Mark the device read-only
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#
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echo "setting device read-only"
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blockdev --setro $SCRATCH_DEV
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#
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# Mount it, and make sure we can't write to it, and we can unmount it again
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#
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echo "mounting read-only block device:"
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_try_scratch_mount 2>&1 | filter_ro_mount
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if [ "${PIPESTATUS[0]}" -eq 0 ]; then
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echo "touching file on read-only filesystem (should fail)"
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touch $SCRATCH_MNT/foo 2>&1 | _filter_scratch
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#
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# Apparently this used to be broken at some point:
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# http://oss.sgi.com/bugzilla/show_bug.cgi?id=807
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#
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echo "unmounting read-only filesystem"
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_scratch_unmount 2>&1 | _filter_scratch
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elif [ -n "${expect_mount_failure}" ]; then
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# Mount failed, so simulate EROFS instead of scribbling on root fs
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echo "touching file on read-only filesystem (should fail)"
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echo "touch: cannot touch 'SCRATCH_MNT/foo': Read-only file system"
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echo "unmounting read-only filesystem"
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else
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echo "Mount failed, though it wasn't supposed to!"
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fi
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echo "setting device read-write"
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blockdev --setrw $SCRATCH_DEV
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echo "mounting read-write block device:"
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_try_scratch_mount 2>&1 | _filter_scratch
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echo "touch files"
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touch $SCRATCH_MNT/{0,1,2,3,4,5,6,7,8,9}{0,1,2,3,4,5,6,7,8,9}
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echo "going down:"
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_scratch_shutdown -f
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echo "unmounting shutdown filesystem:"
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_scratch_unmount 2>&1 | _filter_scratch
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echo "setting device read-only"
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blockdev --setro $SCRATCH_DEV
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#
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# Mounting a filesystem that requires log-recovery fails unless
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# -o norecovery is used.
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#
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echo "mounting filesystem that needs recovery on a read-only device:"
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_try_scratch_mount 2>&1 | _filter_ro_mount
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echo "unmounting read-only filesystem"
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_scratch_unmount 2>&1 | _filter_scratch | _filter_ending_dot
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#
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# This is the way out if the underlying device really is read-only.
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# Doesn't mean it's a good idea in practice, more a last resort
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# data recovery hack.
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#
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echo "mounting filesystem with -o norecovery on a read-only device:"
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_try_scratch_mount -o norecovery 2>&1 | filter_ro_mount
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if [ "${PIPESTATUS[0]}" -eq 0 ]; then
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echo "unmounting read-only filesystem"
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_scratch_unmount 2>&1 | _filter_scratch
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elif [ -n "${expect_mount_failure}" ]; then
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# Mount failed, simulate correct output
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echo "unmounting read-only filesystem"
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else
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echo "Mount failed, though it wasn't supposed to!"
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fi
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echo "setting device read-write"
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blockdev --setrw $SCRATCH_DEV
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#
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# But log recovery is performed when mount with -o ro as long as
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# the underlying device is not write protected.
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#
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echo "mounting filesystem that needs recovery with -o ro:"
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_try_scratch_mount -o ro 2>&1 | _filter_scratch
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# success, all done
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echo "*** done"
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rm -f $seqres.full
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status=0
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