FETCH(9) BSD Kernel Developer's Manual 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 user-space.
The fetch routines provide the following functionality:
fubyte() Fetches a byte of data from the user-space address 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 address base.
RETURN VALUES
The fetch functions return the data fetched or -1 on failure.
SEE ALSO
copy(9), store(9)
BSD
January 7, 1996 BSD
