NetBSD/dist/ipf/lib/ntomask.c
darrenr abd0900a99 Import IPFilter 4.1.34 into NetBSD
4.1.34 - Release 11 March 2010
2964907 uninitialised use compile error
2959506 ipfstat does not display rules with compat
2949139 FR_T_BUILTIN masked out incorrectly
2937422 packets filtered with pools should not be cached
2935529 use of rules with tags leads to deadlock
2917501 whitespace cleanup required
2881514 in/out object functions not wired for compatibility
2841771 ipf/ippool rule maintenace bugs: memory leak, ref-counter bug
2839698 H.323 proxy does not clear fin_state/fin_nat
2010-04-17 20:44:16 +00:00

47 lines
703 B
C

/* $NetBSD: ntomask.c,v 1.1.1.3 2010/04/17 20:45:58 darrenr Exp $ */
/*
* Copyright (C) 2002-2005 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* Id: ntomask.c,v 1.6.2.2 2009/12/27 06:58:06 darrenr Exp
*/
#include "ipf.h"
int ntomask(v, nbits, ap)
int v, nbits;
u_32_t *ap;
{
u_32_t mask;
if (nbits < 0)
return -1;
switch (v)
{
case 4 :
if (nbits > 32 || use_inet6 != 0)
return -1;
if (nbits == 0) {
mask = 0;
} else {
mask = 0xffffffff;
mask <<= (32 - nbits);
}
*ap = htonl(mask);
break;
case 6 :
if ((nbits > 128) || (use_inet6 == 0))
return -1;
fill6bits(nbits, ap);
break;
default :
return -1;
}
return 0;
}