/* * $smu-mark$ * $name: memunlock.c$ * $other_author: Alfonso De Gregorio <dira@speedcom.it> * $other_copyright: Copyright (C) 1999 by Alfonso De Gregorio * $license: This software is under GPL version 2 of license$ * $date: Fri Nov  5 11:55:48 MET 1999$ * $rev: 2$ */#include <unistd.h>#include <sys/mman.h>int memunlock(char *addr, size_t size){#ifdef _POSIX_MEMLOCK_RANGE	unsigned long    page_offset, page_size;	page_size = sysconf(_SC_PAGESIZE);	page_offset = (unsigned long) addr % page_size;	addr -= page_offset; 	size += page_offset;	return ( munlock(addr, size) ); #endif	return (-1);}