diff --git a/include/minix/ds.h b/include/minix/ds.h
new file mode 100755
index 000000000..fc04547b9
--- /dev/null
+++ b/include/minix/ds.h
@@ -0,0 +1,38 @@
+/* Prototypes and definitions for DS interface. */
+
+#ifndef _MINIX_DS_H
+#define _MINIX_DS_H
+
+#include <sys/types.h>
+
+/* DS Flag values. */
+#define DS_IN_USE       0x0001	/* Internal use only. */
+#define DS_PUBLIC       0x0002	/* Publically retrievable value. */
+#define DS_INITIAL      0x0004	/* On subscription, send initial contents. */
+
+/* These type flags are mutually exclusive. Give as args to ds_subscribe. */
+#define DS_TYPE_U32     0x0100
+#define DS_TYPE_STR     0x0200
+#define DS_TYPE_MASK    0xff00	/* All type info. */
+
+/* DS constants. */
+#define DS_MAX_KEYLEN 80        /* Max length for a key, including '\0'. */
+#define DS_MAX_VALLEN 100	/* Max legnth for a str value, incl '\0'. */ 
+
+/* ds.c */
+_PROTOTYPE( int ds_subscribe, (char *name_regexp, int type, int flags));
+
+/* publish/update item */
+_PROTOTYPE( int ds_publish_u32, (char *name, u32_t val));
+_PROTOTYPE( int ds_publish_str, (char *name, char *val));
+
+/* retrieve item by name + type */
+_PROTOTYPE( int ds_retrieve_u32, (char *name, u32_t *val)          );
+_PROTOTYPE( int ds_retrieve_str, (char *name, char *val, size_t len));
+
+/* retrieve updates for item */
+_PROTOTYPE( int ds_check_u32, (char *n, size_t namelen, u32_t *val));
+_PROTOTYPE( int ds_check_str, (char *n, size_t namelen, char *v, size_t vlen));
+
+#endif /* _MINIX_DS_H */
+