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From: Dave Chinner <david@fromorbit.com>
To: xfs@oss.sgi.com
Subject: [PATCH 12/15] xfs: make dir2 ftype offset pointers explicit
Date: Tue, 29 Oct 2013 22:11:55 +1100	[thread overview]
Message-ID: <1383045118-31107-13-git-send-email-david@fromorbit.com> (raw)
In-Reply-To: <1383045118-31107-1-git-send-email-david@fromorbit.com>

From: Dave Chinner <dchinner@redhat.com>

Rather than hiding the ftype field size accounting inside the dirent
padding for the ".." and first entry offset functions for v2
directory formats, add explicit functions that calculate it
correctly.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
 fs/xfs/xfs_da_format.c | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/fs/xfs/xfs_da_format.c b/fs/xfs/xfs_da_format.c
index 5991b26..5a5767c 100644
--- a/fs/xfs/xfs_da_format.c
+++ b/fs/xfs/xfs_da_format.c
@@ -334,6 +334,25 @@ xfs_dir2_data_first_entry_p(
 }
 
 static struct xfs_dir2_data_entry *
+xfs_dir2_ftype_data_dotdot_entry_p(
+	struct xfs_dir2_data_hdr *hdr)
+{
+	return (struct xfs_dir2_data_entry *)
+		((char *)hdr + sizeof(struct xfs_dir2_data_hdr) +
+				XFS_DIR3_DATA_ENTSIZE(1));
+}
+
+static struct xfs_dir2_data_entry *
+xfs_dir2_ftype_data_first_entry_p(
+	struct xfs_dir2_data_hdr *hdr)
+{
+	return (struct xfs_dir2_data_entry *)
+		((char *)hdr + sizeof(struct xfs_dir2_data_hdr) +
+				XFS_DIR3_DATA_ENTSIZE(1) +
+				XFS_DIR3_DATA_ENTSIZE(2));
+}
+
+static struct xfs_dir2_data_entry *
 xfs_dir3_data_dot_entry_p(
 	struct xfs_dir2_data_hdr *hdr)
 {
@@ -762,8 +781,8 @@ const struct xfs_dir_ops xfs_dir2_ftype_ops = {
 	.data_entry_offset = sizeof(struct xfs_dir2_data_hdr),
 
 	.data_dot_entry_p = xfs_dir2_data_dot_entry_p,
-	.data_dotdot_entry_p = xfs_dir2_data_dotdot_entry_p,
-	.data_first_entry_p = xfs_dir2_data_first_entry_p,
+	.data_dotdot_entry_p = xfs_dir2_ftype_data_dotdot_entry_p,
+	.data_first_entry_p = xfs_dir2_ftype_data_first_entry_p,
 	.data_entry_p = xfs_dir2_data_entry_p,
 	.data_unused_p = xfs_dir2_data_unused_p,
 
-- 
1.8.4.rc3

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  parent reply	other threads:[~2013-10-29 11:12 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-29 11:11 [PATCH 00/15] xfs: patches for 3.13 Dave Chinner
2013-10-29 11:11 ` [PATCH 01/15] xfs: xfs_remove deadlocks due to inverted AGF vs AGI lock ordering Dave Chinner
2013-10-30 22:39   ` Ben Myers
2013-10-30 23:15     ` Dave Chinner
2013-11-04 23:10       ` Ben Myers
2013-10-29 11:11 ` [PATCH 02/15] xfs: open code inc_inode_iversion when logging an inode Dave Chinner
2013-10-29 11:11 ` [PATCH 03/15] xfs: abstract the differences in dir2/dir3 via an ops vector Dave Chinner
2013-10-29 11:11 ` [PATCH 04/15] xfs: vectorise remaining shortform dir2 ops Dave Chinner
2013-10-29 11:11 ` [PATCH 05/15] xfs: vectorise directory data operations Dave Chinner
2013-10-29 11:11 ` [PATCH 06/15] xfs: vectorise directory data operations part 2 Dave Chinner
2013-10-29 11:11 ` [PATCH 07/15] xfs: vectorise directory leaf operations Dave Chinner
2013-10-29 11:11 ` [PATCH 08/15] xfs: vectorise DA btree operations Dave Chinner
2013-10-29 11:11 ` [PATCH 09/15] xfs: vectorise encoding/decoding directory headers Dave Chinner
2013-10-29 19:06   ` Ben Myers
2013-10-29 11:11 ` [PATCH 10/15] xfs: vectorise directory leaf operations Dave Chinner
2013-10-29 19:13   ` Ben Myers
2013-10-29 11:11 ` [PATCH 11/15] xfs: convert directory vector functions to constants Dave Chinner
2013-10-29 19:22   ` Ben Myers
2013-10-29 22:15   ` [PATCH 11/15 V2] " Dave Chinner
2013-10-30 18:09     ` Ben Myers
2013-10-29 11:11 ` Dave Chinner [this message]
2013-10-29 20:00   ` [PATCH 12/15] xfs: make dir2 ftype offset pointers explicit Ben Myers
2013-10-29 22:15     ` Dave Chinner
2013-10-30 18:51       ` Ben Myers
2013-10-29 11:11 ` [PATCH 13/15] xfs: validity check the directory block leaf entry count Dave Chinner
2013-10-29 20:43   ` Ben Myers
2013-10-29 11:11 ` [PATCH 14/15] xfs: prevent stack overflows from page cache allocation Dave Chinner
2013-10-30 10:23   ` Christoph Hellwig
2013-10-30 21:40   ` Ben Myers
2013-10-29 11:11 ` [PATCH 15/15] xfs: fix static and extern sparse warnings Dave Chinner
2013-10-29 21:12   ` Ben Myers
2013-10-30 19:22 ` [PATCH 00/15] xfs: patches for 3.13 Ben Myers

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