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/* $FreeBSD$ */
/*
* Copyright (C) 1993-2001 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* $Id: checkrev.c,v 1.12.2.1 2004/03/09 14:44:39 darrenr Exp $
*/
#include <sys/ioctl.h>
#include <fcntl.h>
#include "ipf.h"
#include "netinet/ipl.h"
int checkrev(ipfname)
char *ipfname;
{
static int vfd = -1;
struct friostat fio, *fiop = &fio;
ipfobj_t ipfo;
bzero((caddr_t)&ipfo, sizeof(ipfo));
ipfo.ipfo_rev = IPFILTER_VERSION;
ipfo.ipfo_size = sizeof(*fiop);
ipfo.ipfo_ptr = (void *)fiop;
ipfo.ipfo_type = IPFOBJ_IPFSTAT;
if ((vfd == -1) && ((vfd = open(ipfname, O_RDONLY)) == -1)) {
perror("open device");
return -1;
}
if (ioctl(vfd, SIOCGETFS, &ipfo)) {
perror("ioctl(SIOCGETFS)");
close(vfd);
vfd = -1;
return -1;
}
if (strncmp(IPL_VERSION, fio.f_version, sizeof(fio.f_version))) {
return -1;
}
return 0;
}
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