4 # Test RW open of a device on a RO fs
6 #-----------------------------------------------------------------------
7 # Copyright (c) 2013 Red Hat, Inc. All Rights Reserved.
9 # This program is free software; you can redistribute it and/or
10 # modify it under the terms of the GNU General Public License as
11 # published by the Free Software Foundation.
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
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20 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #-----------------------------------------------------------------------
25 seqres=$RESULT_DIR/$seq
26 echo "QA output created by $seq"
30 status=1 # failure is the default!
31 trap "_cleanup; exit \$status" 0 1 2 3 15
39 # get standard environment, filters and checks
43 # real QA test starts here
45 # Modify as appropriate.
50 DEVNULL=$SCRATCH_MNT/devnull
51 DEVZERO=$SCRATCH_MNT/devzero
54 _scratch_mkfs > $seqres.full 2>&1
57 rm -f $DEVNULL $DEVZERO
59 mknod $DEVNULL c 1 3 || _fail "Could not create devnull device"
60 mknod $DEVZERO c 1 5 || _fail "Could not create devzero device"
62 _scratch_unmount || _fail "Could not unmount scratch device"
63 _scratch_mount -o ro || _fail "Could notemount scratch readonly"
65 # We should be able to read & write to/from these devices even on an RO fs
66 echo "== try to create new file"
67 touch $SCRATCH_MNT/this_should_fail 2>&1 | _filter_scratch
68 echo "== pwrite to null device"
69 $XFS_IO_PROG -c "pwrite 0 512" /dev/null | _filter_xfs_io
70 echo "== pread from zero device"
71 $XFS_IO_PROG -c "pread 0 512" /dev/zero | _filter_xfs_io
73 echo "== truncating write to null device"
74 echo foo > $DEVNULL 2>&1 | _filter_scratch
75 echo "== appending write to null device"
76 echo foo >> $DEVNULL 2>&1 | _filter_scratch