cifs: Check server capability before attempting silly rename

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / fs / cifs / inode.c

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index e7ae45c..0079696 100644 (file)
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -995,6 +995,15 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
                return PTR_ERR(tlink);
        tcon = tlink_tcon(tlink);
 
+       /*
+        * We cannot rename the file if the server doesn't support
+        * CAP_INFOLEVEL_PASSTHRU
+        */
+       if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) {
+               rc = -EBUSY;
+               goto out;
+       }
+
        rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
                         DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
                         &netfid, &oplock, NULL, cifs_sb->local_nls,