1 files changed, 37 insertions, 0 deletions
diff --git a/usr/include/sys/sysmacros.h b/usr/include/sys/sysmacros.h
new file mode 100644
index 0000000..efb476c
--- /dev/null
+++ b/usr/include/sys/sysmacros.h
@@ -0,0 +1,37 @@
+/*
+ * sys/sysmacros.h
+ *
+ * Constructs to create and pick apart dev_t.  The double-underscore
+ * versions are macros so they can be used as constants.
+ */
+
+#ifndef _SYS_SYSMACROS_H
+#define _SYS_SYSMACROS_H
+
+#include <klibc/compiler.h>
+#include <sys/types.h>
+
+#define __major(__d) ((int)(((__d) >> 8) & 0xfffU))
+__static_inline int _major(dev_t __d)
+{
+	return __major(__d);
+}
+#define major(__d) _major(__d)
+
+#define __minor(__d) ((int)(((__d) & 0xffU)|(((__d) >> 12) & 0xfff00U)))
+__static_inline int _minor(dev_t __d)
+{
+	return __minor(__d);
+}
+#define minor(__d) _minor(__d)
+
+#define __makedev(__ma, __mi) \
+	((dev_t)((((__ma) & 0xfffU) << 8)| \
+		 ((__mi) & 0xffU)|(((__mi) & 0xfff00U) << 12)))
+__static_inline dev_t _makedev(int __ma, int __mi)
+{
+	return __makedev(__ma, __mi);
+}
+#define makedev(__ma, __mi) _makedev(__ma, __mi)
+
+#endif				/* _SYS_SYSMACROS_H */