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| STORE(9) | FreeBSD Kernel Developer's Manual | STORE(9) |
NAME
store, subyte,
suword —
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
Thestore 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
Thestore functions return 0 on success or -1 on
failure.
SEE ALSO
copy(9), fetch(9)| July 22, 2021 | FreeBSD 13.1-RELEASE |
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