list.c

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/* Taken from depthcharge: src/base/list.c */
/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <list.h>
 
void list_remove(struct list_node *node)
{
        if (node->prev)
                node->prev->next = node->next;
        if (node->next)
                node->next->prev = node->prev;
}
 
void list_insert_after(struct list_node *node, struct list_node *after)
{
        node->next = after->next;
        node->prev = after;
        after->next = node;
        if (node->next)
                node->next->prev = node;
}
 
void list_insert_before(struct list_node *node, struct list_node *before)
{
        node->prev = before->prev;
        node->next = before;
        before->prev = node;
        if (node->prev)
                node->prev->next = node;
}
 
void list_append(struct list_node *node, struct list_node *head)
{
        while (head->next)
                head = head->next;
 
        list_insert_after(node, head);
}