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Message-ID: <d8e2db85-4a39-4628-847d-08d37cbbb6b4@linux.ibm.com>
Date: Fri, 25 Oct 2024 11:46:03 +0530
From: Nirjhar Roy <nirjhar@...ux.ibm.com>
To: "Darrick J. Wong" <djwong@...nel.org>, Zorro Lang <zlang@...hat.com>
Cc: fstests@...r.kernel.org, linux-ext4@...r.kernel.org,
linux-xfs@...r.kernel.org, ritesh.list@...il.com,
ojaswin@...ux.ibm.com, zlang@...nel.org
Subject: Re: [PATCH 1/2] common/xfs,xfs/207: Adding a common helper function
to check xflag bits on a given file
On 10/25/24 09:37, Darrick J. Wong wrote:
> On Fri, Oct 25, 2024 at 10:56:51AM +0800, Zorro Lang wrote:
>> On Wed, Oct 23, 2024 at 12:56:19AM +0530, Nirjhar Roy wrote:
>>> This patch defines a common helper function to test whether any of
>>> fsxattr xflags field is set or not. We will use this helper in the next
>>> patch for checking extsize (e) flag.
>>>
>>> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>
>>> Reviewed-by: Ojaswin Mujoo <ojaswin@...ux.ibm.com>
>>> Signed-off-by: Nirjhar Roy <nirjhar@...ux.ibm.com>
>>> ---
>>> common/xfs | 9 +++++++++
>>> tests/xfs/207 | 14 +++-----------
>>> 2 files changed, 12 insertions(+), 11 deletions(-)
>>>
>>> diff --git a/common/xfs b/common/xfs
>>> index 62e3100e..7340ccbf 100644
>>> --- a/common/xfs
>>> +++ b/common/xfs
>>> @@ -13,6 +13,15 @@ __generate_xfs_report_vars() {
>>> REPORT_ENV_LIST_OPT+=("TEST_XFS_REPAIR_REBUILD" "TEST_XFS_SCRUB_REBUILD")
>>> }
>>>
>>> +# Check whether a fsxattr xflags character field is set on a given file.
>> Better to explain the arguments, e.g.
>>
>> # Check whether a fsxattr xflags character ($2) field is set on a given file ($1).
>>
>>> +# e.g. fsxattr.xflags = 0x0 [--------------C-]
>>> +# Returns 0 if passed flag character is set, otherwise returns 1
>>> +_test_xfs_xflags_field()
>>> +{
>>> + $XFS_IO_PROG -c "stat" "$1" | grep "fsxattr.xflags" | grep -q "\[.*$2.*\]" \
>>> + && return 0 || return 1
>> That's too complex. Those "return" aren't needed as Darrick metioned. About
>> that two "grep", how about combine them, e.g.
>>
>> _test_xfs_xflags_field()
>> {
>> grep -q "fsxattr.xflags.*\[.*$2.*\]" <($XFS_IO_PROG -c "stat" "$1")
>> }
>>
>>
>>
>>> +}
>>> +
>>> _setup_large_xfs_fs()
>>> {
>>> fs_size=$1
>>> diff --git a/tests/xfs/207 b/tests/xfs/207
>>> index bbe21307..adb925df 100755
>>> --- a/tests/xfs/207
>>> +++ b/tests/xfs/207
>>> @@ -15,21 +15,13 @@ _begin_fstest auto quick clone fiemap
>>> # Import common functions.
>>> . ./common/filter
>>> . ./common/reflink
>>> +. ./common/xfs
>> Is this really necessary? Will this test fail without this line?
>> The common/$FSTYP file is imported automatically, if it's not, that a bug.
> If the generic helper goes in common/rc instead then it's not necessary
> at all.
>
> --D
Yeah, this makes sense.
>
>> Thanks,
>> Zorro
>>
>>>
>>> _require_scratch_reflink
>>> _require_cp_reflink
>>> _require_xfs_io_command "fiemap"
>>> _require_xfs_io_command "cowextsize"
>>>
>>> -# Takes the fsxattr.xflags line,
>>> -# i.e. fsxattr.xflags = 0x0 [--------------C-]
>>> -# and tests whether a flag character is set
>>> -test_xflag()
>>> -{
>>> - local flg=$1
>>> - grep -q "\[.*${flg}.*\]" && echo "$flg flag set" || echo "$flg flag unset"
>>> -}
>>> -
>>> echo "Format and mount"
>>> _scratch_mkfs > $seqres.full 2>&1
>>> _scratch_mount >> $seqres.full 2>&1
>>> @@ -65,14 +57,14 @@ echo "Set cowextsize and check flag"
>>> $XFS_IO_PROG -c "cowextsize 1048576" $testdir/file3 | _filter_scratch
>>> _scratch_cycle_mount
>>>
>>> -$XFS_IO_PROG -c "stat" $testdir/file3 | grep 'fsxattr.xflags' | test_xflag "C"
>>> +_test_xfs_xflags_field "$testdir/file3" "C" && echo "C flag set" || echo "C flag unset"
>>> $XFS_IO_PROG -c "cowextsize" $testdir/file3 | _filter_scratch
>>>
>>> echo "Unset cowextsize and check flag"
>>> $XFS_IO_PROG -c "cowextsize 0" $testdir/file3 | _filter_scratch
>>> _scratch_cycle_mount
>>>
>>> -$XFS_IO_PROG -c "stat" $testdir/file3 | grep 'fsxattr.xflags' | test_xflag "C"
>>> +_test_xfs_xflags_field "$testdir/file3" "C" && echo "C flag set" || echo "C flag unset"
>>> $XFS_IO_PROG -c "cowextsize" $testdir/file3 | _filter_scratch
>>>
>>> status=0
>>> --
>>> 2.43.5
>>>
>>>
--
---
Nirjhar Roy
Linux Kernel Developer
IBM, Bangalore
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