| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved. |
| # |
| # FS QA Test No. 518 |
| # |
| # Test that we can not clone a range from a file A into the middle of a file B |
| # when the range includes the last block of file A and file A's size is not |
| # aligned with the filesystem's block size. Allowing such case would lead to |
| # data corruption since the data between EOF and the end of its block is |
| # undefined. |
| # |
| . ./common/preamble |
| _begin_fstest auto quick clone |
| |
| # Import common functions. |
| . ./common/filter |
| . ./common/reflink |
| |
| _require_scratch_reflink |
| |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _scratch_mount |
| |
| foo_size=$((256 * 1024 + 100)) # 256Kb + 100 bytes |
| bar_size="1M" |
| |
| $XFS_IO_PROG -f -c "pwrite -S 0x3c 0 $foo_size" $SCRATCH_MNT/foo | _filter_xfs_io |
| $XFS_IO_PROG -f -c "pwrite -S 0xb5 0 $bar_size" $SCRATCH_MNT/bar | _filter_xfs_io |
| |
| # Cloning the EOF block of a file into the middle of another file should fail |
| # with an invalid argument error. |
| $XFS_IO_PROG -c "reflink $SCRATCH_MNT/foo 0 512K $foo_size" $SCRATCH_MNT/bar |
| |
| # Unmount the filesystem and mount it again. This guarantees any file data in |
| # the page cache is dropped. |
| _scratch_cycle_mount |
| |
| # Verify no changes were made to the file. |
| echo "File content after failed reflink:" |
| od -A d -t x1 $SCRATCH_MNT/bar |
| |
| status=0 |
| exit |
