suswintr9freebsd
Store data to user-space
Part of store(9freebsd).
Usage
#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>
int
suswintr(void *base, int word);
Overview
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.
suswintr()-
Stores a short word of data to the user-space address base. This function is safe to call during an interrupt context.
Return values
The store functions return 0 on success or -1 on failure.
Releases
5 releases since Debian 5.0 (Lenny); the text changed 4 times.