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-rw-r--r--include/kernel/list.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/kernel/list.h b/include/kernel/list.h
new file mode 100644
index 0000000..cc78a4f
--- /dev/null
+++ b/include/kernel/list.h
@@ -0,0 +1,31 @@
+#ifndef LIST_H
+#define LIST_H
+
+#include <stddef.h>
+
+struct list_head {
+ struct list_head *next;
+ struct list_head *prev;
+};
+
+static inline void list_add(struct list_head *new, struct list_head *head) {
+ new->prev = head;
+ new->next = head->next;
+
+ head->next = new;
+ if (head->prev != NULL)
+ head->prev->next = new;
+}
+
+static inline void list_del(struct list_head *item) {
+ struct list_head *next = item->next;
+ struct list_head *prev = item->prev;
+ if (next != NULL)
+ next->prev = prev;
+ if (prev != NULL)
+ prev->next = next;
+ item->next = NULL;
+ item->prev = NULL;
+}
+
+#endif