2 files changed, 52 insertions, 0 deletions
diff --git a/kernel/lib/list.c b/kernel/lib/list.c
new file mode 100644
index 0000000..12104d8
--- /dev/null
+++ b/kernel/lib/list.c
@@ -0,0 +1,39 @@
+#include <assert.h>
+#include <kmalloc.h>
+#include <lib/list.h>
+
+int list_init(struct list *list) {
+  // TODO: Make it dynamic
+  list->entries = kmalloc(sizeof(void *) * 100);
+  if (!list->entries) {
+    return 0;
+  }
+  list->tail_index = -1;
+  return 1;
+}
+
+void list_reset(struct list *list) {
+  list->tail_index = -1;
+}
+
+int list_add(struct list *list, void *entry) {
+  if (list->tail_index > 100 - 1) {
+    kprintf("Error: list has run out of space\n");
+    assert(0);
+  }
+  list->tail_index++;
+  list->entries[list->tail_index] = entry;
+  return 1;
+}
+
+int list_get(const struct list *list, int index, void **out) {
+  if (index > list->tail_index) {
+    return 0;
+  }
+  *out = list->entries[index];
+  return 1;
+}
+
+void list_free(struct list *list) {
+  kfree(list->entries);
+}
diff --git a/kernel/lib/list.h b/kernel/lib/list.h
new file mode 100644
index 0000000..8c3cce4
--- /dev/null
+++ b/kernel/lib/list.h
@@ -0,0 +1,13 @@
+#ifndef LIST_H
+#define LIST_H
+struct list {
+  void **entries;
+  int tail_index;
+};
+
+int list_init(struct list *list);
+void list_reset(struct list *list);
+void list_free(struct list *list);
+int list_add(struct list *list, void *entry);
+int list_get(const struct list *list, int index, void **out);
+#endif