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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)