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/* $FreeBSD$ */
/*
* Copyright (C) 2012 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* $Id$
*/
#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;
ipfobj_t obj;
bzero((caddr_t)&obj, sizeof(obj));
obj.ipfo_rev = IPFILTER_VERSION;
obj.ipfo_size = sizeof(fio);
obj.ipfo_ptr = (void *)&fio;
obj.ipfo_type = IPFOBJ_IPFSTAT;
if ((vfd == -1) && ((vfd = open(ipfname, O_RDONLY)) == -1)) {
perror("open device");
return -1;
}
if (ioctl(vfd, SIOCGETFS, &obj)) {
ipferror(vfd, "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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