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/*

 * usema/usemaclone-related stuff.

 *

 * `Inspired' by IRIX's sys/usioctl.h

 *

 * Mike.

 */

/* ioctls */

#define UIOC    ('u' << 16 | 's' << 8)

#define UIOCATTACHSEMA  (UIOC|2)        /* attach to sema */

#define UIOCBLOCK       (UIOC|3)        /* block sync "intr"? */

#define UIOCABLOCK      (UIOC|4)        /* block async */

#define UIOCNOIBLOCK    (UIOC|5)        /* IRIX: block sync intr

                                           Linux: block sync nointr */

#define UIOCUNBLOCK     (UIOC|6)        /* unblock sync */

#define UIOCAUNBLOCK    (UIOC|7)        /* unblock async */

#define UIOCINIT        (UIOC|8)        /* init sema (async) */

typedef struct usattach_s {

  dev_t us_dev;         /* attach dev */

  void  *us_handle;     /* userland semaphore handle */

} usattach_t;