diff -urN -X dontdiff linux/fs/open.c doclose/fs/open.c
--- linux/fs/open.c	Sat Aug 12 09:11:31 2000
+++ doclose/fs/open.c	Sat Aug 12 09:00:41 2000
@@ -800,10 +800,9 @@
  * releasing the fd. This ensures that one clone task can't release
  * an fd while another clone is opening it.
  */
-asmlinkage long sys_close(unsigned int fd)
+int do_close(struct files_struct *files, unsigned int fd)
 {
 	struct file * filp;
-	struct files_struct *files = current->files;
 
 	write_lock(&files->file_lock);
 	if (fd >= files->max_fds)
@@ -821,6 +820,12 @@
 	write_unlock(&files->file_lock);
 	return -EBADF;
 }
+
+asmlinkage long sys_close(unsigned int fd)
+{
+	return do_close(current->files, fd);
+}
+
 
 /*
  * This routine simulates a hangup on the tty, to arrange that users
diff -urN -X dontdiff linux/include/linux/fs.h doclose/include/linux/fs.h
--- linux/include/linux/fs.h	Sat Aug 12 09:11:31 2000
+++ doclose/include/linux/fs.h	Sat Aug 12 09:03:40 2000
@@ -890,6 +890,7 @@
 
 /* fs/open.c */
 
+extern int do_close(struct files_struct *, unsigned int);
 asmlinkage long sys_open(const char *, int, int);
 asmlinkage long sys_close(unsigned int);	/* yes, it's really unsigned */
 extern int do_truncate(struct dentry *, loff_t start);