[PATCH 2/3] xfs: refactor filesystem directory block size extraction logic

["Darrick J. Wong" <djwong@kernel.org>]

From: Darrick J. Wong <djwong@kernel.org>

There are a lot of places where we open-code determining the directory
block size for a specific filesystem.  Refactor this into a single
helper to clean up existing tests.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 common/populate |    4 ++--
 common/xfs      |    9 +++++++++
 tests/xfs/099   |    2 +-
 tests/xfs/100   |    2 +-
 tests/xfs/101   |    2 +-
 tests/xfs/102   |    2 +-
 tests/xfs/105   |    2 +-
 tests/xfs/112   |    2 +-
 tests/xfs/113   |    2 +-
 9 files changed, 18 insertions(+), 9 deletions(-)


diff --git a/common/populate b/common/populate
index 9fa1a06798..23b2fecf69 100644
--- a/common/populate
+++ b/common/populate
@@ -175,7 +175,7 @@ _scratch_xfs_populate() {
 	_xfs_force_bdev data $SCRATCH_MNT
 
 	blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
-	dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
+	dblksz="$(_xfs_get_dir_blocksize "$SCRATCH_MNT")"
 	crc="$(_xfs_has_feature "$SCRATCH_MNT" crc -v)"
 	if [ $crc -eq 1 ]; then
 		leaf_hdr_size=64
@@ -602,7 +602,7 @@ _scratch_xfs_populate_check() {
 	is_reflink=$(_xfs_has_feature "$SCRATCH_MNT" reflink -v)
 
 	blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
-	dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
+	dblksz="$(_xfs_get_dir_blocksize "$SCRATCH_MNT")"
 	leaf_lblk="$((32 * 1073741824 / blksz))"
 	node_lblk="$((64 * 1073741824 / blksz))"
 	umount "${SCRATCH_MNT}"
diff --git a/common/xfs b/common/xfs
index c7496bce3f..6445bfd9db 100644
--- a/common/xfs
+++ b/common/xfs
@@ -203,6 +203,15 @@ _xfs_is_realtime_file()
 	$XFS_IO_PROG -c 'stat -v' "$1" | grep -q -w realtime
 }
 
+# Get the directory block size of a mounted filesystem.
+_xfs_get_dir_blocksize()
+{
+	local fs="$1"
+
+	$XFS_INFO_PROG "$fs" | grep 'naming.*bsize' | \
+		sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g'
+}
+
 # Set or clear the realtime status of every supplied path.  The first argument
 # is either 'data' or 'realtime'.  All other arguments should be paths to
 # existing directories or empty regular files.
diff --git a/tests/xfs/099 b/tests/xfs/099
index a7eaff6e0c..82bef8ad26 100755
--- a/tests/xfs/099
+++ b/tests/xfs/099
@@ -37,7 +37,7 @@ _scratch_mkfs_xfs > /dev/null
 
 echo "+ mount fs image"
 _scratch_mount
-dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
+dblksz=$(_xfs_get_dir_blocksize "$SCRATCH_MNT")
 nr="$((dblksz / 40))"
 blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
 leaf_lblk="$((32 * 1073741824 / blksz))"
diff --git a/tests/xfs/100 b/tests/xfs/100
index 79da8cb02c..e638b4ba17 100755
--- a/tests/xfs/100
+++ b/tests/xfs/100
@@ -37,7 +37,7 @@ _scratch_mkfs_xfs > /dev/null
 
 echo "+ mount fs image"
 _scratch_mount
-dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
+dblksz=$(_xfs_get_dir_blocksize "$SCRATCH_MNT")
 nr="$((dblksz / 12))"
 blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
 leaf_lblk="$((32 * 1073741824 / blksz))"
diff --git a/tests/xfs/101 b/tests/xfs/101
index 64f4705aca..11ed329110 100755
--- a/tests/xfs/101
+++ b/tests/xfs/101
@@ -37,7 +37,7 @@ _scratch_mkfs_xfs > /dev/null
 
 echo "+ mount fs image"
 _scratch_mount
-dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
+dblksz=$(_xfs_get_dir_blocksize "$SCRATCH_MNT")
 nr="$((dblksz / 12))"
 blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
 leaf_lblk="$((32 * 1073741824 / blksz))"
diff --git a/tests/xfs/102 b/tests/xfs/102
index 24dce43058..43f4539181 100755
--- a/tests/xfs/102
+++ b/tests/xfs/102
@@ -37,7 +37,7 @@ _scratch_mkfs_xfs > /dev/null
 
 echo "+ mount fs image"
 _scratch_mount
-dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
+dblksz=$(_xfs_get_dir_blocksize "$SCRATCH_MNT")
 nr="$((16 * dblksz / 40))"
 blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
 leaf_lblk="$((32 * 1073741824 / blksz))"
diff --git a/tests/xfs/105 b/tests/xfs/105
index 22a8bf9fb0..002a712883 100755
--- a/tests/xfs/105
+++ b/tests/xfs/105
@@ -37,7 +37,7 @@ _scratch_mkfs_xfs > /dev/null
 
 echo "+ mount fs image"
 _scratch_mount
-dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
+dblksz=$(_xfs_get_dir_blocksize "$SCRATCH_MNT")
 nr="$((16 * dblksz / 40))"
 blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
 leaf_lblk="$((32 * 1073741824 / blksz))"
diff --git a/tests/xfs/112 b/tests/xfs/112
index bc1ab62895..e2d5932da6 100755
--- a/tests/xfs/112
+++ b/tests/xfs/112
@@ -37,7 +37,7 @@ _scratch_mkfs_xfs > /dev/null
 
 echo "+ mount fs image"
 _scratch_mount
-dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
+dblksz=$(_xfs_get_dir_blocksize "$SCRATCH_MNT")
 nr="$((16 * dblksz / 40))"
 blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
 leaf_lblk="$((32 * 1073741824 / blksz))"
diff --git a/tests/xfs/113 b/tests/xfs/113
index e820ed96da..9bb2cd304b 100755
--- a/tests/xfs/113
+++ b/tests/xfs/113
@@ -37,7 +37,7 @@ _scratch_mkfs_xfs > /dev/null
 
 echo "+ mount fs image"
 _scratch_mount
-dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
+dblksz=$(_xfs_get_dir_blocksize "$SCRATCH_MNT")
 nr="$((128 * dblksz / 40))"
 blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
 leaf_lblk="$((32 * 1073741824 / blksz))"