--- dnotify/fs/dnotify.c.~1~	Tue Nov 28 18:40:01 2000
+++ dnotify/fs/dnotify.c	Sun Mar 10 09:58:32 2002
@@ -63,6 +63,8 @@
 			break;
 	if (odn != NULL) {
 		if (turning_off) {
+			if (odn->dn_owner != current->files)
+				goto out_noperm;
 			*prev = odn->dn_next;
 			redo_inode_mask(inode);
 			dn = odn;
@@ -70,6 +72,7 @@
 		}
 		odn->dn_fd = fd;
 		odn->dn_mask |= arg;
+		odn->dn_owner = current->files;
 		inode->i_dnotify_mask |= arg & ~DN_MULTISHOT;
 		goto out_free;
 	}
@@ -82,6 +85,7 @@
 	dn->dn_mask = arg;
 	dn->dn_fd = fd;
 	dn->dn_filp = filp;
+	dn->dn_owner = current->files;
 	inode->i_dnotify_mask |= arg & ~DN_MULTISHOT;
 	dn->dn_next = inode->i_dnotify;
 	inode->i_dnotify = dn;
@@ -91,6 +95,11 @@
 out_free:
 	kmem_cache_free(dn_cache, dn);
 	goto out;
+out_noperm:
+	write_unlock(&dn_lock);
+	if (dn)
+		kmem_cache_free(dn_cache, dn);
+	return -EPERM;
 }
 
 void __inode_dir_notify(struct inode *inode, unsigned long event)
--- dnotify/include/linux/dnotify.h.~1~	Mon Feb 25 22:05:09 2002
+++ dnotify/include/linux/dnotify.h	Sun Mar 10 09:52:04 2002
@@ -11,6 +11,7 @@
 						   see linux/fcntl.h */
 	int			dn_fd;
 	struct file *		dn_filp;
+	fl_owner_t		dn_owner;
 };
 
 #define DNOTIFY_MAGIC	0x444E4F54