DragonFly On-Line Manual Pages

FETCH(9)	      DragonFly Kernel Developer's Manual	      FETCH(9)

NAME
     fetch, fubyte, fuword32, fuword64 -- 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 uint8_t *base);

     int32_t
     fuword32(const uint32_t *base);

     int64_t
     fuword64(const uint64_t *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.

     fuword32()  Fetches 32 bits of data from the user-space address base.

     fuword64()  Fetches 64 bits 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)

DragonFly 5.3		       January 26, 2017 		 DragonFly 5.3