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-rw-r--r--fs/ocfs2/dir.h116
1 files changed, 116 insertions, 0 deletions
diff --git a/fs/ocfs2/dir.h b/fs/ocfs2/dir.h
new file mode 100644
index 000000000..3d8639f38
--- /dev/null
+++ b/fs/ocfs2/dir.h
@@ -0,0 +1,116 @@
+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * dir.h
+ *
+ * Function prototypes
+ *
+ * Copyright (C) 2002, 2004 Oracle. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
+#ifndef OCFS2_DIR_H
+#define OCFS2_DIR_H
+
+struct ocfs2_dx_hinfo {
+ u32 major_hash;
+ u32 minor_hash;
+};
+
+struct ocfs2_dir_lookup_result {
+ struct buffer_head *dl_leaf_bh; /* Unindexed leaf
+ * block */
+ struct ocfs2_dir_entry *dl_entry; /* Target dirent in
+ * unindexed leaf */
+
+ struct buffer_head *dl_dx_root_bh; /* Root of indexed
+ * tree */
+
+ struct buffer_head *dl_dx_leaf_bh; /* Indexed leaf block */
+ struct ocfs2_dx_entry *dl_dx_entry; /* Target dx_entry in
+ * indexed leaf */
+ struct ocfs2_dx_hinfo dl_hinfo; /* Name hash results */
+
+ struct buffer_head *dl_prev_leaf_bh;/* Previous entry in
+ * dir free space
+ * list. NULL if
+ * previous entry is
+ * dx root block. */
+};
+
+void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res);
+
+int ocfs2_find_entry(const char *name, int namelen,
+ struct inode *dir,
+ struct ocfs2_dir_lookup_result *lookup);
+int ocfs2_delete_entry(handle_t *handle,
+ struct inode *dir,
+ struct ocfs2_dir_lookup_result *res);
+int __ocfs2_add_entry(handle_t *handle,
+ struct inode *dir,
+ const char *name, int namelen,
+ struct inode *inode, u64 blkno,
+ struct buffer_head *parent_fe_bh,
+ struct ocfs2_dir_lookup_result *lookup);
+static inline int ocfs2_add_entry(handle_t *handle,
+ struct dentry *dentry,
+ struct inode *inode, u64 blkno,
+ struct buffer_head *parent_fe_bh,
+ struct ocfs2_dir_lookup_result *lookup)
+{
+ return __ocfs2_add_entry(handle, d_inode(dentry->d_parent),
+ dentry->d_name.name, dentry->d_name.len,
+ inode, blkno, parent_fe_bh, lookup);
+}
+int ocfs2_update_entry(struct inode *dir, handle_t *handle,
+ struct ocfs2_dir_lookup_result *res,
+ struct inode *new_entry_inode);
+
+int ocfs2_check_dir_for_entry(struct inode *dir,
+ const char *name,
+ int namelen);
+int ocfs2_empty_dir(struct inode *inode);
+
+int ocfs2_find_files_on_disk(const char *name,
+ int namelen,
+ u64 *blkno,
+ struct inode *inode,
+ struct ocfs2_dir_lookup_result *res);
+int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name,
+ int namelen, u64 *blkno);
+int ocfs2_readdir(struct file *file, struct dir_context *ctx);
+int ocfs2_dir_foreach(struct inode *inode, struct dir_context *ctx);
+int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
+ struct inode *dir,
+ struct buffer_head *parent_fe_bh,
+ const char *name,
+ int namelen,
+ struct ocfs2_dir_lookup_result *lookup);
+struct ocfs2_alloc_context;
+int ocfs2_fill_new_dir(struct ocfs2_super *osb,
+ handle_t *handle,
+ struct inode *parent,
+ struct inode *inode,
+ struct buffer_head *fe_bh,
+ struct ocfs2_alloc_context *data_ac,
+ struct ocfs2_alloc_context *meta_ac);
+
+int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh);
+
+struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize,
+ void *data);
+#endif /* OCFS2_DIR_H */