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OpenDarwin 7.2.1 - man page for fetch (opendarwin section 9)

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


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