fetch(9)
NAME
- fetch, fubyte, fusword, fuswintr, fuword - fetch data from
- user-space
SYNOPSIS
#include <sys/types.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/resourcevar.h>
int
fubyte(const void *base);
int
fusword(void *base);
int
fuswintr(void *base);
long
fuword(const void *base);
DESCRIPTION
- The fetch functions are designed to copy small amounts of
- data from userspace.
- The fetch routines provide the following functionality:
- fubyte() Fetches a byte of data from the user-space ad
- dress base.
- fusword() Fetches a short word of data from the user-space
- address
- base.
- fuswintr() Fetches a short word of data from the user-space
- address
- base. This function is safe to call during an
- interrupt context.
- fuword() Fetches a word of data from the user-space ad
- dress base.
RETURN VALUES
- The fetch functions return the data fetched or -1 on fail
- ure.
SEE ALSO
- copy(9), store(9)
- BSD January 7, 1996