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+/*
+ * Copyright (c) 2002-2003 Erik Fears
+ * Copyright (c) 2014-2018 ircd-hybrid development team
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
+ * USA
+ */
+
+/*! \file list.h
+ * \brief A header for the list manipulation routines.
+ * \version $Id$
+ */
+
+#ifndef LIST_H
+#define LIST_H
+
+#define LIST_FOREACH(pos, head) for (pos = (head); pos != NULL; pos = pos->next)
+#define LIST_FOREACH_SAFE(pos, n, head) for (pos = (head), n = pos ? pos->next : NULL; pos != NULL; pos = n, n = pos ? pos->next : NULL)
+#define LIST_FOREACH_PREV(pos, head) for (pos = (head); pos != NULL; pos = pos->prev)
+#define LIST_SIZE(list) (list)->elements
+
+typedef struct _node node_t;
+typedef struct _list list_t;
+
+struct _list
+{
+ struct _node *head;
+ struct _node *tail;
+ unsigned int elements;
+};
+
+struct _node
+{
+ struct _node *next;
+ struct _node *prev;
+ void *data;
+};
+
+extern node_t *node_create(void);
+extern void node_free(node_t *);
+
+extern node_t *list_add(void *, node_t *, list_t *);
+extern node_t *list_remove(node_t *, list_t *);
+#endif /* LIST_H */