ovl: add support for "nfs_export" configuration

[linux-block.git] / fs / overlayfs / overlayfs.h

diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index d1cfa69c98b5451059276505b88b3abcc4b668f8..db75955f96775951e5911699d62d02613a634806 100644 (file)
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -194,6 +194,8 @@ const struct cred *ovl_override_creds(struct super_block *sb);
 struct super_block *ovl_same_sb(struct super_block *sb);
 bool ovl_can_decode_fh(struct super_block *sb);
 struct dentry *ovl_indexdir(struct super_block *sb);
+bool ovl_index_all(struct super_block *sb);
+bool ovl_verify_lower(struct super_block *sb);
 struct ovl_entry *ovl_alloc_entry(unsigned int numlower);
 bool ovl_dentry_remote(struct dentry *dentry);
 bool ovl_dentry_weird(struct dentry *dentry);
@@ -249,15 +251,21 @@ static inline bool ovl_is_impuredir(struct dentry *dentry)
 
 
 /* namei.c */
-int ovl_verify_origin(struct dentry *dentry, struct dentry *origin,
-                     bool is_upper, bool set);
-int ovl_verify_index(struct dentry *index, struct ovl_path *lower,
-                    unsigned int numlower);
+int ovl_verify_set_fh(struct dentry *dentry, const char *name,
+                     struct dentry *real, bool is_upper, bool set);
+int ovl_verify_index(struct ovl_fs *ofs, struct dentry *index);
 int ovl_get_index_name(struct dentry *origin, struct qstr *name);
 int ovl_path_next(int idx, struct dentry *dentry, struct path *path);
-struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags);
+struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
+                         unsigned int flags);
 bool ovl_lower_positive(struct dentry *dentry);
 
+static inline int ovl_verify_origin(struct dentry *upper,
+                                   struct dentry *origin, bool set)
+{
+       return ovl_verify_set_fh(upper, OVL_XATTR_ORIGIN, origin, false, set);
+}
+
 /* readdir.c */
 extern const struct file_operations ovl_dir_operations;
 int ovl_check_empty_dir(struct dentry *dentry, struct list_head *list);
@@ -267,8 +275,7 @@ void ovl_dir_cache_free(struct inode *inode);
 int ovl_check_d_type_supported(struct path *realpath);
 void ovl_workdir_cleanup(struct inode *dir, struct vfsmount *mnt,
                         struct dentry *dentry, int level);
-int ovl_indexdir_cleanup(struct dentry *dentry, struct vfsmount *mnt,
-                        struct ovl_path *lower, unsigned int numlower);
+int ovl_indexdir_cleanup(struct ovl_fs *ofs);
 
 /* inode.c */
 int ovl_set_nlink_upper(struct dentry *dentry);
@@ -321,6 +328,6 @@ int ovl_copy_up(struct dentry *dentry);
 int ovl_copy_up_flags(struct dentry *dentry, int flags);
 int ovl_copy_xattr(struct dentry *old, struct dentry *new);
 int ovl_set_attr(struct dentry *upper, struct kstat *stat);
-struct ovl_fh *ovl_encode_fh(struct dentry *lower, bool is_upper);
+struct ovl_fh *ovl_encode_fh(struct dentry *real, bool is_upper);
 int ovl_set_origin(struct dentry *dentry, struct dentry *lower,
                   struct dentry *upper);