[PATCH v2 4/4] common/rc: factor out _get|set_xfs_scratch_sb_field()

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It's common to get and set the values of fields in XFS super block,
so factor them out as _get|set_xfs_scratch_sb_field() and update the
related test cases accordingly.

Signed-off-by: Hou Tao <houtao1@xxxxxxxxxx>
---
 common/xfs    | 20 ++++++++++++++++++++
 tests/xfs/007 |  6 ++----
 tests/xfs/098 |  4 ++--
 tests/xfs/186 |  3 +--
 tests/xfs/199 | 13 ++++---------
 tests/xfs/307 | 11 ++---------
 tests/xfs/308 | 11 ++---------
 tests/xfs/339 |  6 +++---
 tests/xfs/340 |  2 +-
 tests/xfs/999 |  8 --------
 10 files changed, 37 insertions(+), 47 deletions(-)

diff --git a/common/xfs b/common/xfs
index d4fef94..82ddc24 100644
--- a/common/xfs
+++ b/common/xfs
@@ -599,3 +599,23 @@ _require_no_xfs_debug()
 		_notrun "Require XFS built without CONFIG_XFS_DEBUG"
 	fi
 }
+
+_get_xfs_scratch_sb_field()
+{
+	local field=$1
+
+	shift
+
+	_scratch_xfs_db -r -c 'sb 0' "$@" -c "print $field" | \
+	awk -v field=$field '$0 ~ field {print $3}'
+}
+
+_set_xfs_scratch_sb_field()
+{
+	local field=$1
+	local value=$2
+
+	shift 2
+
+	_scratch_xfs_db -x -c 'sb 0' "$@" -c "write $field -- $value"
+}
diff --git a/tests/xfs/007 b/tests/xfs/007
index d80d380..c477db7 100755
--- a/tests/xfs/007
+++ b/tests/xfs/007
@@ -62,10 +62,8 @@ do_test()
 	echo "*** umount"
 	_scratch_unmount
 
-	QINO_1=`xfs_db -c "sb 0" -c "p" $SCRATCH_DEV | \
-			grep $qino_1 | awk '{print $NF}'`
-	QINO_2=`xfs_db -c "sb 0" -c "p" $SCRATCH_DEV | \
-			grep $qino_2 | awk '{print $NF}'`
+	QINO_1=`_get_xfs_scratch_sb_field $qino_1`
+	QINO_2=`_get_xfs_scratch_sb_field $qino_2`
 
 	echo "*** Usage before quotarm ***"
 	_scratch_xfs_db -c "inode $QINO_1" -c "p core.nblocks"
diff --git a/tests/xfs/098 b/tests/xfs/098
index 7873f32..6edac63 100755
--- a/tests/xfs/098
+++ b/tests/xfs/098
@@ -96,9 +96,9 @@ echo "+ check fs"
 _scratch_xfs_repair -n >> $seqres.full 2>&1 || _fail "xfs_repair should not fail"
 
 echo "+ corrupt image"
-logstart="$(_scratch_xfs_db -c 'sb 0' -c 'p' | grep '^logstart =' | cut -d ' ' -f 3)"
+logstart="$(_get_xfs_scratch_sb_field logstart)"
 logstart="$(_scratch_xfs_db -c "convert fsblock ${logstart} byte" | sed -e 's/^.*(\([0-9]*\).*$/\1/g')"
-logblocks="$(xfs_db -c 'sb 0' -c 'p' "${SCRATCH_DEV}" | grep '^logblocks =' | cut -d ' ' -f 3)"
+logblocks="$(_get_xfs_scratch_sb_field logblocks)"
 $XFS_IO_PROG -f -c "pwrite -S 0x62 ${logstart} $((logblocks * blksz))" "${SCRATCH_DEV}" >> $seqres.full
 
 echo "+ mount image"
diff --git a/tests/xfs/186 b/tests/xfs/186
index 4b36ae6..aaae202 100755
--- a/tests/xfs/186
+++ b/tests/xfs/186
@@ -173,8 +173,7 @@ fi
 
 # set inum to root dir ino
 # we'll add in dirents and EAs into the root directory
-eval `_scratch_xfs_db -r -c 'sb 0' -c 'p rootino' | $SED_PROG 's/ //g'`
-inum=$rootino
+inum=`_get_xfs_scratch_sb_field rootino`
 fork_dir=$SCRATCH_MNT
 _print_inode
 
diff --git a/tests/xfs/199 b/tests/xfs/199
index ee26439..8f79cbf 100755
--- a/tests/xfs/199
+++ b/tests/xfs/199
@@ -49,11 +49,6 @@ _supported_os Linux
 
 _require_scratch
 
-get_features()
-{
-	_scratch_xfs_db -x  -c "sb" -c "print $1" | awk '// {print $3}'
-}
-
 # clear any mkfs options so that we can directly specify the options we need to
 # be able to test the features bitmask behaviour correctly.
 MKFS_OPTIONS=
@@ -63,8 +58,8 @@ _scratch_mkfs_xfs -m crc=0 -l lazy-count=1 >/dev/null 2>&1
 # gives us the values the resultant tests should be the same as for testing at
 # the end of the test. We don't hard code feature values, because that makes the
 # test break every time we change mkfs feature defaults.
-f2=`get_features features2`
-bf2=`get_features bad_features2`
+f2=`_get_xfs_scratch_sb_field features2`
+bf2=`_get_xfs_scratch_sb_field bad_features2`
 
 #
 # Now clear the normal flags
@@ -74,7 +69,7 @@ _scratch_xfs_db -x  -c 'sb' -c 'write features2 0'
 
 _scratch_mount
 _scratch_unmount
-rwf2=`get_features features2`
+rwf2=`_get_xfs_scratch_sb_field features2`
 
 #
 # Clear the normal flags again for the second rount.
@@ -88,7 +83,7 @@ _scratch_xfs_db -x  -c 'sb' -c 'write features2 0'
 _scratch_mount -o ro
 _scratch_mount -o remount,rw
 _scratch_unmount
-rof2=`get_features features2`
+rof2=`_get_xfs_scratch_sb_field features2`
 
 [ "$f2" != "$bf2" ] && echo "mkfs: features2 $f2 != bad_features2 $bf2"
 [ "$f2" != "$rwf2" ] && echo "mount rw: old features2 $f2 != new features2 $rwf2"
diff --git a/tests/xfs/307 b/tests/xfs/307
index 4ce3e66..1e6cd80 100755
--- a/tests/xfs/307
+++ b/tests/xfs/307
@@ -71,18 +71,11 @@ _set_agf_data() {
 }
 
 _get_sb_data() {
-	field="$1"
-	shift
-
-	_scratch_xfs_db -c 'sb 0' "$@" -c "p $field"  | awk '{print $3}'
+	_get_xfs_scratch_sb_field "$@"
 }
 
 _set_sb_data() {
-	field="$1"
-	value="$2"
-	shift; shift
-
-	_scratch_xfs_db -x -c 'sb 0' "$@" -c "write $field -- $value"  >> $seqres.full
+	_set_xfs_scratch_sb_field "$@" >> $seqres.full
 }
 
 _filter_leftover() {
diff --git a/tests/xfs/308 b/tests/xfs/308
index e9d7f76..21bde02 100755
--- a/tests/xfs/308
+++ b/tests/xfs/308
@@ -71,18 +71,11 @@ _set_agf_data() {
 }
 
 _get_sb_data() {
-	field="$1"
-	shift
-
-	_scratch_xfs_db -c 'sb 0' "$@" -c "p $field"  | awk '{print $3}'
+	_get_xfs_scratch_sb_field "$@"
 }
 
 _set_sb_data() {
-	field="$1"
-	value="$2"
-	shift; shift
-
-	_scratch_xfs_db -x -c 'sb 0' "$@" -c "write $field -- $value"  >> $seqres.full
+	_set_xfs_scratch_sb_field "$@" >> $seqres.full
 }
 
 _filter_leftover() {
diff --git a/tests/xfs/339 b/tests/xfs/339
index 734d47b..2acd63f 100755
--- a/tests/xfs/339
+++ b/tests/xfs/339
@@ -59,9 +59,9 @@ ln $SCRATCH_MNT/f3 $SCRATCH_MNT/f4
 _scratch_unmount
 
 echo "Corrupt fs"
-rrmapino=$(_scratch_xfs_db -c 'sb 0' -c 'p rrmapino' | awk '{print $3}')
-_scratch_xfs_db -x -c 'sb 0' -c 'addr rootino' \
-	-c "write u3.sfdir3.list[3].inumber.i4 $rrmapino" >> $seqres.full
+rrmapino=`_get_xfs_scratch_sb_field rrmapino`
+_set_xfs_scratch_sb_field "u3.sfdir3.list[3].inumber.i4" $rrmapino \
+	-c 'addr rootino' >> $seqres.full
 _scratch_mount
 
 echo "Check files"
diff --git a/tests/xfs/340 b/tests/xfs/340
index 8cc50a2..2df8819 100755
--- a/tests/xfs/340
+++ b/tests/xfs/340
@@ -59,7 +59,7 @@ ino=$(stat -c '%i' $SCRATCH_MNT/f3)
 _scratch_unmount
 
 echo "Corrupt fs"
-rrmapino=$(_scratch_xfs_db -c 'sb 0' -c 'p rrmapino' | awk '{print $3}')
+rrmapino=$(_get_xfs_scratch_sb_field rrmapino)
 _scratch_xfs_db -x -c "inode $rrmapino" \
 	-c 'write core.format 2' -c 'write core.size 0' \
 	-c 'write core.nblocks 0' -c 'sb 0' -c 'addr rootino' \
diff --git a/tests/xfs/999 b/tests/xfs/999
index cea2f85..73be58a 100755
--- a/tests/xfs/999
+++ b/tests/xfs/999
@@ -51,14 +51,6 @@ _cleanup()
 	_cleanup_flakey > /dev/null 2>&1
 }
 
-_get_xfs_scratch_sb_field()
-{
-	local field=$1
-
-	_scratch_xfs_db -r -c "sb 0" -c "print $field" | \
-	awk -v field=$field '$0 ~ field {print $3}'
-}
-
 # inject IO write error for the XFS filesystem except its log section
 make_xfs_scratch_flakey_table()
 {
-- 
2.9.5

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