CIFS: Move building path to root to ops struct

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 2b1234599e7..340dce0ed07 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -164,6 +164,7 @@ struct cifs_ses;
 struct cifs_tcon;
 struct dfs_info3_param;
 struct cifs_fattr;
+struct smb_vol;
 
 struct smb_version_operations {
         int (*send_cancel)(struct TCP_Server_Info *, void *,
@@ -227,6 +228,9 @@ struct smb_version_operations {
         int (*get_srv_inum)(const unsigned int, struct cifs_tcon *,
                             struct cifs_sb_info *, const char *,
                             u64 *uniqueid, FILE_ALL_INFO *);
+        /* build a full path to the root of the mount */
+        char * (*build_path_to_root)(struct smb_vol *, struct cifs_sb_info *,
+                                     struct cifs_tcon *);
 };
 
 struct smb_version_values {
@@ -803,6 +807,15 @@ convert_delimiter(char *path, char delim)
         }
 }
 
+static inline char *
+build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
+                   struct cifs_tcon *tcon)
+{
+        if (!vol->ops->build_path_to_root)
+                return NULL;
+        return vol->ops->build_path_to_root(vol, cifs_sb, tcon);
+}
+
 #ifdef CONFIG_CIFS_STATS
 #define cifs_stats_inc atomic_inc