inode: move 'i_extra_size' to 'i_extra' buffer

[wimlib] / include / wimlib / inode.h

diff --git a/include/wimlib/inode.h b/include/wimlib/inode.h
index 07d1885fb7f15ae3feb884defddba3368186333b..ed6f9de92ee1ea088e1052c3b5f6c78a0b0681dd 100644 (file)
--- a/include/wimlib/inode.h
+++ b/include/wimlib/inode.h
@@ -10,6 +10,7 @@ struct avl_tree_node;
 struct blob_descriptor;
 struct blob_table;
 struct wim_dentry;
+struct wim_inode_extra;
 struct wim_security_data;
 struct wimfs_fd;
 
@@ -129,10 +130,8 @@ struct wim_inode {
        /* Number of dentries that are aliases for this inode.  */
        u32 i_nlink : 30;
 
-       /* Flag used to mark this inode as visited; this is used when visiting
-        * all the inodes in a dentry tree exactly once.  It will be 0 by
-        * default and must be cleared following the tree traversal, even in
-        * error paths.  */
+       /* Flag used by some code to mark this inode as visited.  It will be 0
+        * by default, and it always must be cleared after use.  */
        u32 i_visited : 1;
 
        /* Cached value  */
@@ -142,10 +141,7 @@ struct wim_inode {
         * dentry.  This should be a series of tagged items, each of which
         * represents a bit of extra metadata, such as the file's object ID.
         * See tagged_items.c for more information.  */
-       void *i_extra;
-
-       /* Size of @i_extra buffer in bytes.  If 0, there is no extra data.  */
-       size_t i_extra_size;
+       struct wim_inode_extra *i_extra;
 
        /* Creation time, last access time, and last write time for this inode,
         * in 100-nanosecond intervals since 12:00 a.m UTC January 1, 1601.
@@ -232,6 +228,12 @@ struct wim_inode {
        u32 i_next_stream_id;
 };
 
+/* Optional extra data for a WIM inode  */
+struct wim_inode_extra {
+       size_t size;    /* Size of the extra data in bytes  */
+       u8 data[];      /* The extra data  */
+};
+
 /*
  * The available reparse tags are documented at
  * http://msdn.microsoft.com/en-us/library/dd541667(v=prot.10).aspx.
@@ -271,13 +273,13 @@ new_inode(struct wim_dentry *dentry, bool set_timestamps);
        hlist_for_each_entry((dentry), &(inode)->i_alias_list, d_alias_node)
 
 /* Return an alias of the specified inode.  */
-#define inode_first_dentry(inode) \
+#define inode_any_dentry(inode) \
        hlist_entry(inode->i_alias_list.first, struct wim_dentry, d_alias_node)
 
 /* Return the full path of an alias of the specified inode, or NULL if a full
  * path could not be determined.  */
-#define inode_first_full_path(inode) \
-       dentry_full_path(inode_first_dentry(inode))
+#define inode_any_full_path(inode) \
+       dentry_full_path(inode_any_dentry(inode))
 
 extern void
 d_associate(struct wim_dentry *dentry, struct wim_inode *inode);