| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2017 Red Hat Inc. All Rights Reserved. |
| # |
| # FS QA Test 028 |
| # |
| # When file in lower dir is locked and it's been copied up, |
| # make sure the lock is working in overlayfs. |
| # |
| # Kernel commit below fixed it. |
| # c568d68341be locks: fix file locking on overlayfs |
| # |
| # This reproducer was originally written by |
| # Miklos Szeredi <mszeredi@redhat.com> |
| # |
| . ./common/preamble |
| _begin_fstest auto copyup quick |
| |
| # Import common functions. |
| . ./common/filter |
| |
| # real QA test starts here |
| |
| # Modify as appropriate. |
| _supported_fs overlay |
| _require_scratch |
| _require_command "$FLOCK_PROG" flock |
| |
| # Remove all files from previous tests |
| _scratch_mkfs |
| |
| lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER |
| mkdir -p $lowerdir |
| touch $lowerdir/foo |
| |
| # Mounting overlay |
| _scratch_mount |
| |
| # Testing copyup and flock |
| flock $SCRATCH_MNT/foo sleep 3 & |
| # flock in subshell should fail with no output |
| (sleep 1; echo bar > $SCRATCH_MNT/foo; \ |
| flock -n $SCRATCH_MNT/foo echo LOCKED) |
| |
| wait |
| echo "Silence is golden" |
| # success, all done |
| status=0 |
| exit |
