Re: [PATCH v4 5/5] generic/396: Add a copy test for invalid input

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On 12/08/2016 03:20 PM, Darrick J. Wong wrote:
> On Thu, Dec 08, 2016 at 01:49:08PM -0500, Anna Schumaker wrote:
>> This test passes invalid argumnt combinations to the copy_file_range()
>> system call to test that input is verified before attempting to copy.
>>
>> Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
>> ---
>>  tests/generic/396     | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++
>>  tests/generic/396.out |  8 ++++++
>>  tests/generic/group   |  1 +
>>  3 files changed, 77 insertions(+)
>>  create mode 100644 tests/generic/396
>>  create mode 100644 tests/generic/396.out
>>
>> diff --git a/tests/generic/396 b/tests/generic/396
>> new file mode 100644
>> index 0000000..c262070
>> --- /dev/null
>> +++ b/tests/generic/396
>> @@ -0,0 +1,68 @@
>> +#!/bin/bash
>> +# FS QA Test No. 396
>> +#
>> +# Tests vfs_copy_file_range() error checking
>> +#-----------------------------------------------------------------------
>> +# Copyright (c) 2016 Netapp, 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 -rf $tmp.*
>> +}
>> +
>> +# get standard environment
>> +. common/rc
>> +. common/filter
>> +
>> +# real QA test starts here
>> +_supported_fs generic
>> +_supported_os Linux
>> +
>> +_require_xfs_io_command "copy_range"
>> +_require_test
>> +
>> +testdir=$TEST_DIR/test-$seq
>> +rm -rf $testdir
>> +mkdir $testdir
>> +rm -f $seqres.full
>> +
>> +echo "Create the original file"
>> +$XFS_IO_PROG -f -c 'pwrite -S 0x61 0 1000' $testdir/file >> $seqres.full 2>&1
>> +
>> +echo "source pos > source size:"
>> +$XFS_IO_PROG -f -c "copy_range -s 1000 -l 100 $testdir/file" "$testdir/copy"
>> +
>> +echo "target read-only"
>> +$XFS_IO_PROG -r -f -c "copy_range -s 0 -l 100 $testdir/file" "$testdir/copy"
>> +
>> +echo "target append-only"
>> +$XFS_IO_PROG -a -f -c "copy_range -s 0 -l 100 $testdir/file" "$testdir/copy"
> 
> Good start, though I can think of a few more things...

Thanks!

> 
> Copying when one or the other file arguments are directories/device files/etc.,

Good suggestion, I didn't even think of that one.

> copies where pos < size but (pos + len) > size,

This is in the first patch as the "Copy beyond end of original file" test

> copies where pos + len
> overflow, overlapped src/dest ranges, and perhaps even copies across holes and
> unwritten extents?

These are also good suggestions.  I'll add them in!

Anna

> 
> --D
> 
>> +
>> +#success, all done
>> +status=0
>> +exit
>> diff --git a/tests/generic/396.out b/tests/generic/396.out
>> new file mode 100644
>> index 0000000..4031883
>> --- /dev/null
>> +++ b/tests/generic/396.out
>> @@ -0,0 +1,8 @@
>> +QA output created by 396
>> +Create the original file
>> +source pos > source size:
>> +copy_range: Invalid argument
>> +target read-only
>> +copy_range: Bad file descriptor
>> +target append-only
>> +copy_range: Bad file descriptor
>> diff --git a/tests/generic/group b/tests/generic/group
>> index 2b50ddb..eee0f39 100644
>> --- a/tests/generic/group
>> +++ b/tests/generic/group
>> @@ -398,3 +398,4 @@
>>  393 auto quick copy
>>  394 auto quick copy
>>  395 auto quick copy
>> +396 auto quick copy
>> -- 
>> 2.10.2
>>
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