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authorDave Chinner <dchinner@redhat.com>2013-10-29 12:11:55 +0100
committerBen Myers <bpm@sgi.com>2013-10-30 19:52:38 +0100
commitb01ef655d8b9753c3d25e4c22e0a4e7c442fe5e1 (patch)
tree278f8f66e6c01e9954cf66f1f46b8a01c35d432d /fs/xfs
parentxfs: convert directory vector functions to constants (diff)
downloadlinux-b01ef655d8b9753c3d25e4c22e0a4e7c442fe5e1.tar.xz
linux-b01ef655d8b9753c3d25e4c22e0a4e7c442fe5e1.zip
xfs: make dir2 ftype offset pointers explicit
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> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_da_format.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/fs/xfs/xfs_da_format.c b/fs/xfs/xfs_da_format.c
index 40f18d3b7b9b..870cac0b0981 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,