lib/common/checkrev.c

	checkrev.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * Copyright (C) 1993-2001 by Darren Reed.
 *
 * See the IPFILTER.LICENCE file for details on licencing.
 *
 * $Id: checkrev.c,v 1.9 2003/04/27 17:09:46 darrenr Exp $
 */

#include <sys/ioctl.h>
#include <fcntl.h>

#include "ipf.h"
#include "ipl.h"

int checkrev(ipfname)
char *ipfname;
{
    struct friostat fio, *fiop = &fio;
    ipfobj_t ipfo;
    int vfd;

    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 = open(ipfname, O_RDONLY)) == -1) {
        perror("open device");
        return -1;
    }

    if (ioctl(vfd, SIOCGETFS, &ipfo)) {
        perror("ioctl(SIOCGETFS)");
        close(vfd);
        return -1;
    }
    close(vfd);

    if (strncmp(IPL_VERSION, fio.f_version, sizeof(fio.f_version))) {
        return -1;
    }
    return 0;
}