From 86e878857219d3b0ffc716ec3135258a9d5523f2 Mon Sep 17 00:00:00 2001
From: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Date: Mon, 5 Dec 2011 23:41:14 -0200
Subject: [PATCH] kmod_list: add helper kmod_list_insert_after()

---
 libkmod/libkmod-list.c    | 31 +++++++++++++++++++++++++++++++
 libkmod/libkmod-private.h |  2 ++
 2 files changed, 33 insertions(+)

diff --git a/libkmod/libkmod-list.c b/libkmod/libkmod-list.c
index 333a54c..ea73cbb 100644
--- a/libkmod/libkmod-list.c
+++ b/libkmod/libkmod-list.c
@@ -71,6 +71,20 @@ static inline struct list_node *list_node_remove(struct list_node *node)
 	return node->prev;
 }
 
+static inline void list_node_insert_after(struct list_node *list,
+							struct list_node *node)
+{
+	if (list == NULL) {
+		list_node_init(node);
+		return;
+	}
+
+	node->prev = list;
+	node->next = list->next;
+	list->next->prev = node;
+	list->next = node;
+}
+
 struct kmod_list *kmod_list_append(struct kmod_list *list, const void *data)
 {
 	struct kmod_list *new;
@@ -85,6 +99,23 @@ struct kmod_list *kmod_list_append(struct kmod_list *list, const void *data)
 	return list ? list : new;
 }
 
+struct kmod_list *kmod_list_insert_after(struct kmod_list *list, const void *data)
+{
+	struct kmod_list *new;
+
+	if (list == NULL)
+		return kmod_list_append(list, data);
+
+	new = malloc(sizeof(*new));
+	if (new == NULL)
+		return NULL;
+
+	new->data = (void *)data;
+	list_node_insert_after(&list->node, &new->node);
+
+	return list;
+}
+
 struct kmod_list *kmod_list_prepend(struct kmod_list *list, const void *data)
 {
 	struct kmod_list *new;
diff --git a/libkmod/libkmod-private.h b/libkmod/libkmod-private.h
index 5740fe2..0297161 100644
--- a/libkmod/libkmod-private.h
+++ b/libkmod/libkmod-private.h
@@ -53,6 +53,8 @@ struct kmod_list *kmod_list_remove_data(struct kmod_list *list,
 					const void *data) __must_check __attribute__((nonnull(2)));
 struct kmod_list *kmod_list_remove_n_latest(struct kmod_list *list,
 						unsigned int n) __must_check;
+struct kmod_list *kmod_list_insert_after(struct kmod_list *list, const void *data) __attribute__((nonnull(2)));
+
 #undef kmod_list_foreach
 #define kmod_list_foreach(list_entry, first_entry) \
 	for (list_entry = ((first_entry) == NULL) ? NULL : (first_entry); \
-- 
2.7.4