Re: [PATCH 2/2] common: cleanup _require_xfs_io_command

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On 2017/05/16 16:04, Eryu Guan wrote:
On Mon, May 15, 2017 at 03:17:59PM +0800, Xiao Yang wrote:
We don't need to check specific flags at the end of this function
if we have checked them before. e.g, generic/071 and generic/422
are marked as notrun unexpectedly because xfs_io doesn't support
long-format help for falloc before xfsprogs v4.9.  Actually, xfs_io
has supported falloc, so these case should not be marked as notrun.

Signed-off-by: Xiao Yang<yangx.jy@xxxxxxxxxxxxxx>
Thanks for the fix!

---
  common/rc | 12 ++++++++----
  1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/common/rc b/common/rc
index 539f153..2c893c0 100644
--- a/common/rc
+++ b/common/rc
@@ -2041,6 +2041,7 @@ _require_xfs_io_command()
  	command=$1
  	shift
  	param="$*"
+	param_check=0

  	testfile=$TEST_DIR/$$.xfs_io
  	case $command in
@@ -2055,6 +2056,7 @@ _require_xfs_io_command()
  		;;
  	"falloc" )
  		testio=`$XFS_IO_PROG -F -f -c "falloc $param 0 1m" $testfile 2>&1`
+		param_check=1
  		;;
  	"fpunch" | "fcollapse" | "zero" | "fzero" | "finsert" | "funshare")
  		testio=`$XFS_IO_PROG -F -f -c "pwrite 0 20k" -c "fsync" \
@@ -2063,6 +2065,7 @@ _require_xfs_io_command()
  	"fiemap")
  		testio=`$XFS_IO_PROG -F -f -c "pwrite 0 20k" -c "fsync" \
  			-c "fiemap -v $param" $testfile 2>&1`
+		param_check=1
  		;;
  	"flink" )
  		testio=`$XFS_IO_PROG -T -F -c "flink $testfile" \
@@ -2087,7 +2090,7 @@ _require_xfs_io_command()
  		testio=`$XFS_IO_PROG -f -c "utimes" 0 0 0 0 $testfile 2>&1`
  		;;
  	*)
-		testio=`$XFS_IO_PROG -c "$command help" 2>&1`
+		testio=`$XFS_IO_PROG -c "help $command" 2>&1`
  	esac

  	rm -f $testfile 2>&1>  /dev/null
@@ -2100,9 +2103,10 @@ _require_xfs_io_command()
  	echo $testio | grep -q "foreign file active"&&  \
  		_notrun "xfs_io $command not supported on $FSTYP"

-	test -z "$param"&&  return
-	$XFS_IO_PROG -c "help $command" | grep -q "^ $param --" || \
-		_notrun "xfs_io $command doesn't support $param"
+	if [ -n $param -a $param_check -eq 0 ]; then
$param needs quotes here, otherwise if no param is specified [ -n ]
still reports pass, e.g.

$ unset empty_var
$ if [ -n $empty_var ]; then echo "should not see this"; fi
should not see this
$ if [ -n "$empty_var" ]; then echo "should not see this"; fi
<nothing printed>

I can fix it at commit time.
Hi Eryu

Agreed.  Thanks for your explanation. :-)

Thanks,
Xiao Yang.
Thanks,
Eryu

+		$XFS_IO_PROG -c "help $command" | grep -q "^ $param --" || \
+			_notrun "xfs_io $command doesn't support $param"
+	fi
  }

  # check that kernel and filesystem support direct I/O
--
1.8.3.1



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