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

BSD