2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2013 Red Hat, Inc. All Rights Reserved.
7 # Test RW open of a device on a RO fs
10 seqres=$RESULT_DIR/$seq
11 echo "QA output created by $seq"
15 status=1 # failure is the default!
16 trap "_cleanup; exit \$status" 0 1 2 3 15
25 # get standard environment, filters and checks
29 # real QA test starts here
31 # Modify as appropriate.
39 DEVNULL=$SCRATCH_MNT/devnull
40 DEVZERO=$SCRATCH_MNT/devzero
41 SYMLINK=$SCRATCH_MNT/symlink
42 BINDFILE=$SCRATCH_MNT/bindfile
43 TARGET=$TEST_DIR/target
46 _scratch_mkfs > $seqres.full 2>&1
49 rm -f $DEVNULL $DEVZERO
51 mknod $DEVNULL c 1 3 || _fail "Could not create devnull device"
52 mknod $DEVZERO c 1 5 || _fail "Could not create devzero device"
53 touch $BINDFILE || _fail "Could not create bind mount file"
54 touch $TARGET || _fail "Could not create symlink target"
55 ln -s $TARGET $SYMLINK
57 _scratch_remount ro || _fail "Could not remount scratch readonly"
59 # We should be able to read & write to/from these devices even on an RO fs
60 echo "== try to create new file"
61 touch $SCRATCH_MNT/this_should_fail 2>&1 | _filter_scratch
62 echo "== pwrite to null device"
63 $XFS_IO_PROG -c "pwrite 0 512" $DEVNULL | _filter_xfs_io
64 echo "== pread from zero device"
65 $XFS_IO_PROG -c "pread 0 512" $DEVZERO | _filter_xfs_io
67 echo "== truncating write to null device"
68 echo foo > $DEVNULL 2>&1 | _filter_scratch
69 echo "== appending write to null device"
70 echo foo >> $DEVNULL 2>&1 | _filter_scratch
72 echo "== writing to symlink from ro fs to rw fs"
73 # Various combinations of O_CREAT & O_TRUNC
74 $XFS_IO_PROG -c "pwrite 0 512" $SYMLINK | _filter_xfs_io
75 $XFS_IO_PROG -f -c "pwrite 0 512" $SYMLINK | _filter_xfs_io
76 $XFS_IO_PROG -t -c "pwrite 0 512" $SYMLINK | _filter_xfs_io
78 echo "== write to bind-mounted rw file on ro fs"
79 mount --bind $TARGET $BINDFILE
80 # with and without -f (adds O_CREAT)
81 $XFS_IO_PROG -c "pwrite 0 512" $BINDFILE | _filter_xfs_io
82 $XFS_IO_PROG -f -c "pwrite 0 512" $BINDFILE | _filter_xfs_io
83 $XFS_IO_PROG -t -c "pwrite 0 512" $BINDFILE | _filter_xfs_io