feat: nearly complete POSIX.1-2008 compliant terminal interface implementation

[lunaix-os.git] / lunaix-os / includes / lunaix / types.h

diff --git a/lunaix-os/includes/lunaix/types.h b/lunaix-os/includes/lunaix/types.h
index 8b0c0d62dab1d526f03914b3e340419b4728b8c7..b6799813d3b4102e66a8c5aeb3e2420ae63e1fd2 100644 (file)
--- a/lunaix-os/includes/lunaix/types.h
+++ b/lunaix-os/includes/lunaix/types.h
@@ -27,4 +27,22 @@ typedef unsigned int cpu_t;
 
 typedef u64_t lba_t;
 
+#define true 1
+#define false 0
+typedef int bool;
+
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ *
+ * @ptr:       the pointer to the member.
+ * @type:      the type of the container struct this is embedded in.
+ * @member:    the name of the member within the struct.
+ *
+ */
+#define container_of(ptr, type, member)                                        \
+    ({                                                                         \
+        const typeof(((type*)0)->member)* __mptr = (ptr);                      \
+        (ptr) ? (type*)((char*)__mptr - offsetof(type, member)) : 0;           \
+    })
+
 #endif /* __LUNAIX_TYPES_H */