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Command: ustore_char | Section: 9 | Source: NetBSD | File: ustore_char.9
USTORE(9) FreeBSD Kernel Developer's Manual USTORE(9)
NAME
ustore, ustore_8, ustore_16, ustore_32, ustore_64, ustore_char,
ustore_short, ustore_int, ustore_long, ustore_ptr - store data in user-
space
SYNOPSIS
#include <sys/systm.h>
int
ustore_8(const uint8_t *uaddr, uint8_t val);
int
ustore_16(const uint16_t *uaddr, uint16_t val);
int
ustore_32(const uint32_t *uaddr, uint32_t val);
int
ustore_64(const uint64_t *uaddr, uint64_t val);
int
ustore_char(const unsigned char *uaddr, unsigned char val);
int
ustore_short(const unsigned short *uaddr, unsigned short val);
int
ustore_int(const unsigned int *uaddr, unsigned int val);
int
ustore_long(const unsigned long *uaddr, unsigned long val);
int
ustore_ptr(const void **uaddr, void *val);
DESCRIPTION
The ustore functions provide a way to store a value to single memory
cells in user-space. In each case, the value val is stored in the user-
space memory location referenced by uaddr.
The ustore_64 function is only available on systems employing the `LP64'
memory model, which can be determined by testing for the presence of the
_LP64 C preprocessor macro.
RETURN VALUES
The ustore functions return 0 on success and an error number on failure.
SEE ALSO
copy(9), ufetch(9)
FreeBSD 14.1-RELEASE-p8 March 18, 2019 FreeBSD 14.1-RELEASE-p8