STORE(9)

NAME
store, subyte, suword - store data to user-space

SYNOPSIS
#include <sys/types.h>
#include <sys/time.h>
#include <sys/systm.h>
int
subyte(volatile void *base, int byte);
int
suword(volatile void *base, long word);
int
suword16(volatile void *base, int word);
int
suword32(volatile void *base, int32_t word);
int
suword64(volatile void *base, int64_t word);

DESCRIPTION
The store functions are designed to copy small amounts of data to user-space. If the user address is naturally aligned, then the operation will be performed atomically. Otherwise it may fail or be performed non-atomically, depending on the platform.

The store routines provide the following functionality:

subyte()
    Stores a byte of data to the user-space address base.

suword()
    Stores a word of data to the user-space address base.

suword16()
    Stores 16 bits of data to the user-space address base.

suword32()
    Stores 32 bits of data to the user-space address base.

suword64()
    Stores 64 bits of data to the user-space address base.

RETURN VALUES
The store functions return 0 on success or -1 on failure.

SEE ALSO
copy(9), fetch(9)