Date: Fri, 31 Aug 2001 15:01:39 +0300 From: Ruslan Ermilov <ru@FreeBSD.ORG> To: Anuranjan <anu@nttmcl.com> Cc: questions@FreeBSD.ORG Subject: Re: why wouldn't this code work :( Message-ID: <20010831150139.B60910@sunbay.com> In-Reply-To: <002001c13198$56e8c550$f64545d8@ntt27f48otgmw8>; from anu@nttmcl.com on Thu, Aug 30, 2001 at 02:11:29PM -0700 References: <002001c13198$56e8c550$f64545d8@ntt27f48otgmw8>
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These questions are better answered on freebsd-net.
BSD dropped support for these route(4) ioctl's yet in 1993.
The error is generated by rtioctl() in sys/net/route.c.
On Thu, Aug 30, 2001 at 02:11:29PM -0700, Anuranjan wrote:
> Hi,
> Following is an attempt to add an entry into the kernel routing table using
> ioctl ..... it give errno = EOPNOTSUPP. I understand that this means there's
> some problem in the rtentry parameter I'm passing to ioctl ... but for the
> world of me I can't understand how to make this work!!! Help greatly
> appreciated..........
> --A
>
> ----------------------------------------------------------------------------
> ----------------------------------------------------------------------------
> ----------------
>
>
> add_entry(char *srcIPaddr)
> {
> int err;
> struct rtentry *rt;
> struct sockaddr_in *s;
> int sockfd;
>
> struct sockaddr_in gway;
>
> srcIPaddr = "4.5.6.7";
>
> memset(&gway, 0, sizeof(struct sockaddr_in));
> gway.sin_family = AF_INET;
> gway.sin_addr.s_addr = inet_addr("2.3.4.1");
>
> s->sin_len = sizeof(struct sockaddr_in);
> s->sin_family = AF_INET;
> s->sin_addr.s_addr = inet_addr(srcIPaddr);
>
> rt = (struct rtentry*)malloc(sizeof(struct rtentry));
> memset(rt, 0, (sizeof(struct rtentry)));
> rt->rt_flags |= RTF_HOST;
>
> rt->rt_gateway = (struct sockaddr *)&gway;
> rt->rt_flags |= RTF_UP | RTF_GATEWAY;
> rt->rt_use = 0;
>
> rt_key(rt) = (struct sockaddr*)s;
>
> fwd_enable(1);
>
> sockfd = socket(AF_INET, SOCK_DGRAM, 0);
>
> if( ioctl(sockfd, SIOCADDRT, rt) < 0)
> {
> if (errno != EINVAL)
> {
> printf ("ioctl error :%d\n", errno);
> }
> }
> }
--
Ruslan Ermilov Oracle Developer/DBA,
ru@sunbay.com Sunbay Software AG,
ru@FreeBSD.org FreeBSD committer,
+380.652.512.251 Simferopol, Ukraine
http://www.FreeBSD.org The Power To Serve
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