fs: Don't allow to create hardlink for deleted file

[linux-2.6-block.git] / fs / namei.c

diff --git a/fs/namei.c b/fs/namei.c
index 83e92bab79a6bfe168ca1739fd27071601a5a46d..33be51a2ddb7d5cd3216e87b6df16e55be9b4e98 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2906,7 +2906,11 @@ int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_de
                return error;
 
        mutex_lock(&inode->i_mutex);
-       error = dir->i_op->link(old_dentry, dir, new_dentry);
+       /* Make sure we don't allow creating hardlink to an unlinked file */
+       if (inode->i_nlink == 0)
+               error =  -ENOENT;
+       else
+               error = dir->i_op->link(old_dentry, dir, new_dentry);
        mutex_unlock(&inode->i_mutex);
        if (!error)
                fsnotify_link(dir, inode, new_dentry);