diff options
Diffstat (limited to 'contrib/ipfilter/lib/checkrev.c')
-rw-r--r-- | contrib/ipfilter/lib/checkrev.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/contrib/ipfilter/lib/checkrev.c b/contrib/ipfilter/lib/checkrev.c new file mode 100644 index 0000000..28032ce --- /dev/null +++ b/contrib/ipfilter/lib/checkrev.c @@ -0,0 +1,46 @@ +/* $NetBSD$ */ + +/* + * 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; +} |