From b01ef655d8b9753c3d25e4c22e0a4e7c442fe5e1 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 29 Oct 2013 22:11:55 +1100 Subject: [PATCH] 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 Reviewed-by: Ben Myers Signed-off-by: Ben Myers --- 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 40f18d3b7b9b..870cac0b0981 100644 --- a/fs/xfs/xfs_da_format.c +++ b/fs/xfs/xfs_da_format.c @@ -333,6 +333,25 @@ xfs_dir2_data_first_entry_p( XFS_DIR2_DATA_ENTSIZE(2)); } +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, -- GitLab