-#ifndef _SYSMACROS_H
-#define _SYSMACROS_H
+#ifndef _SYS_SYSMACROS_H
+#define _SYS_SYSMACROS_H
-#define major(x) (((x) >> 8) & 0xff)
-#define minor(x) ((x) & 0xff)
+#define major(x) ((unsigned)((x) >> 8) & 0xff)
+#define minor(x) ((unsigned)(x) & 0xff)
#define makedev(x,y) (((x)<<8)|((y)&0xff))
#endif