make nameidata completely opaque outside of fs/namei.c

[cascardo/linux.git] / fs / namei.c

diff --git a/fs/namei.c b/fs/namei.c
index db5fe86..398a73b 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -487,6 +487,18 @@ void path_put(const struct path *path)
 }
 EXPORT_SYMBOL(path_put);
 
+struct nameidata {
+       struct path     path;
+       struct qstr     last;
+       struct path     root;
+       struct inode    *inode; /* path.dentry.d_inode */
+       unsigned int    flags;
+       unsigned        seq, m_seq;
+       int             last_type;
+       unsigned        depth;
+       char *saved_names[MAX_NESTED_LINKS + 1];
+};
+
 /*
  * Path walking has 2 modes, rcu-walk and ref-walk (see
  * Documentation/filesystems/path-lookup.txt).  In situations when we can't
@@ -695,6 +707,18 @@ void nd_jump_link(struct nameidata *nd, struct path *path)
        nd->flags |= LOOKUP_JUMPED;
 }
 
+void nd_set_link(struct nameidata *nd, char *path)
+{
+       nd->saved_names[nd->depth] = path;
+}
+EXPORT_SYMBOL(nd_set_link);
+
+char *nd_get_link(struct nameidata *nd)
+{
+       return nd->saved_names[nd->depth];
+}
+EXPORT_SYMBOL(nd_get_link);
+
 static inline void put_link(struct nameidata *nd, struct path *link, void *cookie)
 {
        struct inode *inode = link->dentry->d_inode;