+/* Format for special alternate data stream entries to store UNIX data for files
+ * and directories (see: WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA) */
+struct wimlib_unix_data {
+ u16 version; /* Must be 0 */
+ u16 uid;
+ u16 gid;
+ u16 mode;
+} PACKED;
+
+#ifndef __WIN32__
+
+#define NO_UNIX_DATA (-1)
+#define BAD_UNIX_DATA (-2)
+extern int
+inode_get_unix_data(const struct wim_inode *inode,
+ struct wimlib_unix_data *unix_data,
+ u16 *stream_idx_ret);
+
+#define UNIX_DATA_UID 0x1
+#define UNIX_DATA_GID 0x2
+#define UNIX_DATA_MODE 0x4
+#define UNIX_DATA_ALL (UNIX_DATA_UID | UNIX_DATA_GID | UNIX_DATA_MODE)
+#define UNIX_DATA_CREATE 0x8
+extern int
+inode_set_unix_data(struct wim_inode *inode, uid_t uid, gid_t gid, mode_t mode,
+ struct wim_lookup_table *lookup_table, int which);
+#endif
+
+extern int
+read_dentry(const u8 metadata_resource[], u64 metadata_resource_len,
+ u64 offset, struct wim_dentry *dentry);
+
+
+extern int
+read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len,
+ struct wim_dentry *dentry);
+
+extern u8 *
+write_dentry_tree(const struct wim_dentry *tree, u8 *p);
+
+static inline bool
+dentry_is_root(const struct wim_dentry *dentry)