subyte9
Store data to user-space
Part of store(9).
Usage
#include <sys/types.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/resourcevar.h>
int
subyte(void *base, int byte);
int
susword(void *base, int word);
int
suswintr(void *base, int word);
int
suword(void *base, long word);
Overview
The store functions are designed to copy small amounts of data to user-space.
The store routines provide the following functionality:
subyte()-
Stores a byte of data to the user-space address base.
susword()-
Stores a short word of data to the user-space address base.
suswintr()-
Stores a short word of data to the user-space address base. This function is safe to call during an interrupt context.
suword()-
Stores a word of data to the user-space address base.
Return values
The store functions return 0 on success or -1 on failure.