47 lines
930 B
C
47 lines
930 B
C
/* $NetBSD: checkrev.c,v 1.1.1.1 2004/03/28 08:56:18 martti Exp $ */
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/*
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* Copyright (C) 1993-2001 by Darren Reed.
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*
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* Id: checkrev.c,v 1.12.2.1 2004/03/09 14:44:39 darrenr Exp
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*/
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include "ipf.h"
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#include "netinet/ipl.h"
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int checkrev(ipfname)
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char *ipfname;
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{
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static int vfd = -1;
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struct friostat fio, *fiop = &fio;
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ipfobj_t ipfo;
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bzero((caddr_t)&ipfo, sizeof(ipfo));
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ipfo.ipfo_rev = IPFILTER_VERSION;
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ipfo.ipfo_size = sizeof(*fiop);
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ipfo.ipfo_ptr = (void *)fiop;
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ipfo.ipfo_type = IPFOBJ_IPFSTAT;
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if ((vfd == -1) && ((vfd = open(ipfname, O_RDONLY)) == -1)) {
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perror("open device");
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return -1;
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}
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if (ioctl(vfd, SIOCGETFS, &ipfo)) {
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perror("ioctl(SIOCGETFS)");
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close(vfd);
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vfd = -1;
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return -1;
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}
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if (strncmp(IPL_VERSION, fio.f_version, sizeof(fio.f_version))) {
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return -1;
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}
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return 0;
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}
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