- Return ENOENT when trying to add files to removed (but open) directories.

- Add test58 to test this behavior.

servers/ext2/link.c

@@ -77,6 +77,11 @@ PUBLIC int fs_link()
   if( (ip = get_inode(fs_dev, fs_m_in.REQ_DIR_INO)) == NULL)
 	  return(EINVAL);
 
+  if (ip->i_links_count == NO_LINK) {	/* Dir does not actually exist */
+	put_inode(ip);
+	return(ENOENT);
+  }
+
   /* If 'name2' exists in full (even if no space) set 'r' to error. */
   if ((new_ip = advance(ip, string, IGN_PERM)) == NULL) {
 	r = err_code;
@@ -349,6 +354,14 @@ PUBLIC int fs_rename()
   /* Get new dir inode */
   if( (new_dirp = get_inode(fs_dev, (ino_t) fs_m_in.REQ_REN_NEW_DIR)) == NULL)
 	r = err_code;
+
+  if (new_dirp->i_links_count == NO_LINK) { /* Dir does not actually exist */
+  	put_inode(old_ip);
+  	put_inode(old_dirp);
+  	put_inode(new_dirp);
+  	return(ENOENT);
+  }
+
   new_ip = advance(new_dirp, new_name, IGN_PERM); /* not required to exist */
 
   /* However, if the check failed because the file does exist, don't continue.

servers/ext2/open.c

@@ -286,6 +286,11 @@ PRIVATE struct inode *new_node(struct inode *ldirp,
   register struct inode *rip;
   register int r;
 
+  if (ldirp->i_links_count == NO_LINK) { /* Dir does not actually exist */
+	err_code = ENOENT;
+	return(NULL);
+  }
+
   /* Get final component of the path. */
   rip = advance(ldirp, string, IGN_PERM);