fis-gtm/sr_unix/probe.c

36 lines
983 B
C
Raw Normal View History

/****************************************************************
* *
* Copyright 2001, 2007 Fidelity Information Services, Inc *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include <sys/types.h>
#include <sys/mman.h>
#include "probe.h"
OS_PAGE_SIZE_DECLARE
boolean_t probe(uint4 len, void *addr, boolean_t write)
{
int status;
uint4 temp;
if (NULL == addr) /* Special case for null pointer passed */
return FALSE;
#if defined(__alpha)
temp = ROUND_DOWN2((uint4)addr, OS_PAGE_SIZE);
status = mvalid((caddr_t)temp, (size_t)(len + ((uint4)addr - temp)), write ? PROT_WRITE : PROT_READ);
assert(0 == status);
return (status == 0 ? TRUE : FALSE);
#else
return TRUE;
#endif
}