[PATCH v3] xfstests generic 312: test fallocate(2) ENOSPC when file size is greater than 4G

[Eryu Guan]

On Mon, May 06, 2013 at 05:42:35PM +0800, Eryu Guan wrote:
> ENOSPC in fallocate(2) could corrupt ext4 when file size > 4G
> 
> Regression test for commit
> 29ae07b ext4: Fix overflow caused by missing cast in ext4_fallocate()
> 
> Signed-off-by: Eryu Guan <eguan at redhat.com>
> ---
> v3: rebase on top of master
> v2: Check for $SCRATCH_DEV size, _notrun if it's smaller than 5G

Any comments on this test case?

Thanks!

Eryu Guan
> 
>  tests/generic/312     | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  tests/generic/312.out |  2 ++
>  tests/generic/group   |  1 +
>  3 files changed, 75 insertions(+)
>  create mode 100644 tests/generic/312
>  create mode 100644 tests/generic/312.out
> 
> diff --git a/tests/generic/312 b/tests/generic/312
> new file mode 100644
> index 0000000..eaec43c
> --- /dev/null
> +++ b/tests/generic/312
> @@ -0,0 +1,72 @@
> +#! /bin/bash
> +# FS QA Test No. 312
> +#
> +# ENOSPC in fallocate(2) could corrupt ext4 when file size > 4G
> +#
> +# Regression test for commit
> +# 29ae07b ext4: Fix overflow caused by missing cast in ext4_fallocate()
> +#
> +#-----------------------------------------------------------------------
> +# Copyright (c) 2013 Red Hat, Inc.  All Rights Reserved.
> +#
> +# This program is free software; you can redistribute it and/or
> +# modify it under the terms of the GNU General Public License as
> +# published by the Free Software Foundation.
> +#
> +# This program is distributed in the hope that it would be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program; if not, write the Free Software Foundation,
> +# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
> +#-----------------------------------------------------------------------
> +#
> +
> +seq=`basename $0`
> +seqres=$RESULT_DIR/$seq
> +echo "QA output created by $seq"
> +
> +here=`pwd`
> +tmp=/tmp/$$
> +status=1	# failure is the default!
> +trap "_cleanup; exit \$status" 0 1 2 3 15
> +
> +_cleanup()
> +{
> +    cd /
> +    rm -f $tmp.*
> +}
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/filter
> +
> +# real QA test starts here
> +_supported_fs generic
> +_supported_os Linux
> +_require_xfs_io_falloc
> +_require_scratch
> +
> +# 5G in byte
> +fssize=$((2**30 * 5))
> +required_blocks=$(($fssize / 1024))
> +dev_blocks=$(grep $(basename $(readlink -f $SCRATCH_DEV)) /proc/partitions | $AWK_PROG '{print $3}')
> +if [ $required_blocks -gt $dev_blocks ];then
> +	_notrun "this test requires \$SCRATCH_DEV has ${fssize}B space"
> +fi
> +
> +rm -f $seqres.full
> +_scratch_mkfs_sized $fssize >>$seqres.full 2>&1
> +_scratch_mount >>$seqres.full 2>&1
> +
> +echo "Silence is golden"
> +
> +# fallocate(2) a 6G(> 4G) file on a 5G fs
> +$XFS_IO_PROG -f -c "falloc 0 6g" $SCRATCH_MNT/testfile.$seq >>$seqres.full 2>&1
> +
> +_scratch_unmount
> +_check_scratch_fs
> +status=0
> +exit
> diff --git a/tests/generic/312.out b/tests/generic/312.out
> new file mode 100644
> index 0000000..6e72aa9
> --- /dev/null
> +++ b/tests/generic/312.out
> @@ -0,0 +1,2 @@
> +QA output created by 312
> +Silence is golden
> diff --git a/tests/generic/group b/tests/generic/group
> index eb52833..cb15afe 100644
> --- a/tests/generic/group
> +++ b/tests/generic/group
> @@ -114,3 +114,4 @@
>  309 auto quick
>  310 auto
>  311 auto metadata log
> +312 auto quick prealloc enospc
> -- 
> 1.8.2.1
>