[LTP] [PATCH v2 ltp] fs/ext4: enhance logic of ext4_nsec_timestamps_test

[Yixin Zhang]

1. Check the big block device at do_setup(), TBROK if it's mounted
2. Replace umount to tst_umount to handle umount failed due to device busy
3. Fix typo error

Signed-off-by: Yixin Zhang <yixin.zhang@intel.com>
---
 .../ext4_nsec_timestamps_test.sh                   | 34 ++++++++--------------
 .../kernel/fs/ext4-new-features/ext4_funcs.sh      |  3 ++
 2 files changed, 15 insertions(+), 22 deletions(-)

diff --git a/testcases/kernel/fs/ext4-new-features/ext4-nsec-timestamps/ext4_nsec_timestamps_test.sh b/testcases/kernel/fs/ext4-new-features/ext4-nsec-timestamps/ext4_nsec_timestamps_test.sh
index c6ff7c2ba..69ae74c42 100755
--- a/testcases/kernel/fs/ext4-new-features/ext4-nsec-timestamps/ext4_nsec_timestamps_test.sh
+++ b/testcases/kernel/fs/ext4-new-features/ext4-nsec-timestamps/ext4_nsec_timestamps_test.sh
@@ -56,15 +56,10 @@ ext4_test_sec_timestamps()
 	if [ $atime -ne 0 -o $mtime -ne 0 -o $ctime -ne 0 ]; then
 		tst_resm TFAIL "Timestamp is not second(atime: $atime, mtime: \
 				$mtime, ctime: $ctime)"
-		umount mnt_point
-		return
-	fi
-
-	umount mnt_point
-	if [ $? -ne 0 ]; then
-		tst_resm TFAIL "failed to umount ext4 filesystem"
+		tst_umount mnt_point
 		return
 	fi
+	tst_umount mnt_point
 
 	tst_resm TPASS "Ext4 nanosecond timestamps test with 128 inode size pass"
 }
@@ -76,8 +71,8 @@ ext4_test_nsec_timestamps()
 
 	mkfs.ext3 -I 256 $EXT4_DEV >/dev/null 2>&1
 	if [ $? -ne 0 ]; then
-		tst_resm TFAIL "failed to create ext4 filesystem"
-		return
+		tst_resm TFAIL "failed to create ext3 filesystem"
+	  return
 	fi
 
 	mount -t ext4 $EXT4_DEV mnt_point
@@ -105,10 +100,9 @@ ext4_test_nsec_timestamps()
 	nsec_ctime=`ext4_file_time mnt_point/tmp_file ctime nsec`
 
 	# Test nanosecond
-	if [ $nsec_atime -eq 0 -a $nsec_mtime -eq 0 -a $nsec_ctime -eq 0 ]
-	then
+	if [ $nsec_atime -eq 0 -a $nsec_mtime -eq 0 -a $nsec_ctime -eq 0 ]; then
 		tst_resm TFAIL "The timestamp is not nanosecond(nsec_atime: $nsec_atime, nsec_mtime: $nsec_mtime, nsec_ctime: $nsec_ctime)"
-		umount mnt_point
+		tst_mount mnt_point
 		return
 	fi
 
@@ -122,15 +116,11 @@ ext4_test_nsec_timestamps()
 			than the current time we got.(sec_atime: $sec_atime, \
 			sec_mtime: $sec_mtime, sec_ctime: $sec_ctime, \
 			cur_time[s]: $sec)"
-		umount mnt_point
+		tst_umount mnt_point
 		return
 	fi
 
-	umount mnt_point
-	if [ $? -ne 0 ]; then
-		tst_resm TFAIL "failed to umount ext4 filesystem"
-		return
-	fi
+	tst_umount mnt_point
 
 	# Test mount to ext3 and then mount back to ext4
 	mount -t ext3 $EXT4_DEV mnt_point
@@ -138,7 +128,7 @@ ext4_test_nsec_timestamps()
 		tst_resm TFAIL "failed to mount to ext3"
 		return
 	fi
-	umount mnt_point
+	tst_umount mnt_point
 
 	mount -t ext4 $EXT4_DEV mnt_point
 	if [ $? -ne 0 ]; then
@@ -148,7 +138,7 @@ ext4_test_nsec_timestamps()
 
 	nsec_atime2=`ext4_file_time mnt_point/tmp_file atime nsec`
 	nsec_mtime2=`ext4_file_time mnt_point/tmp_file mtime nsec`
-	nsec_ctime2=`ext4_file_time mnt_point/tmp_file mtime nsec`
+	nsec_ctime2=`ext4_file_time mnt_point/tmp_file ctime nsec`
 
 	if [ $nsec_atime -ne $nsec_atime2 -o $nsec_ctime -ne $nsec_ctime2 -o \
 	     $nsec_mtime -ne $nsec_mtime2 ]; then
@@ -156,11 +146,11 @@ ext4_test_nsec_timestamps()
 			unexpected. Before[atime mtime ctime]: $nsec_atime \
 			$nsec_mtime $nsec_ctime, After[atime mtime ctime]: \
 			$nsec_atime2 $nsec_mtime2 $nsec_ctime2)"
-		umount mnt_point
+		tst_umount mnt_point
 		return
 	fi
 
-	umount mnt_point
+	tst_umount mnt_point
 	tst_resm TPASS "Ext4 nanosecond timestamps test with 256 inode size pass"
 }
 
diff --git a/testcases/kernel/fs/ext4-new-features/ext4_funcs.sh b/testcases/kernel/fs/ext4-new-features/ext4_funcs.sh
index a9eb54e8d..1514da5a2 100755
--- a/testcases/kernel/fs/ext4-new-features/ext4_funcs.sh
+++ b/testcases/kernel/fs/ext4-new-features/ext4_funcs.sh
@@ -45,6 +45,9 @@ ext4_setup()
 		tst_brkm TCONF "tests need a big block device(5G-10G)"
 	else
 		export EXT4_DEV=$LTP_BIG_DEV
+		if mount | cut -d' ' -f1 | grep -q ^$EXT4_DEV$ ; then
+			tst_brkm TBROK "$EXT4_DEV should be umounted before test"
+		fi
 	fi
 
 	tst_tmpdir
-- 
2.14.1