+#ifndef S_ISFIFO
+#ifdef _S_IFIFO
+#define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
+#else
+#define S_ISFIFO(mode) (0)
+#endif
+#endif
+
+#ifndef S_ISDIR
+#define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
+#endif
+
+#ifndef S_ISREG
+#define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
+#endif
+
+
+#define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) || S_ISFIFO(mode))
+
+#ifndef ACCESSPERMS
+#define ACCESSPERMS 0777
+#endif