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);
#include <sys/resourcevar.h>
DESCRIPTION
The store functions are designed to copy small amounts of data to user-space. If write is successful, it is performed atomically. The data written must be naturally aligned.
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
BSD April 17, 2018 BSD