sendto() giving EPERM outside a jail

[Steve Watt]

In <200703221201.35028.doconnor at gsoft.com.au>,
Daniel O'Connor <doconnor at gsoft.com.au> wrote:
>Hi,
>I am trying to port miniupnpd (http://miniupnp.tuxfamily.org/) and by in large 
>it seems to work fine (evil idea as it is :) However it spews out a lot of..
>miniupnpd[13010]: sendto(udp_notify): Operation not permitted
>
>According to my reading of the man page it is not possible to get this error 
>unless I'm using jails (which I'm not). The code in question does..

That's probably a buglet in the man page.

>memset(&sockname, 0, sizeof(struct sockaddr_in));
>sockname.sin_family = AF_INET;
>sockname.sin_port = htons(PORT);
>sockname.sin_addr.s_addr = inet_addr(UPNP_MCAST_ADDR);
>while(known_service_types[i])
>{
>        snprintf(bufr, sizeof(bufr),
>                         "NOTIFY * HTTP/1.1\r\n"
>                        "HOST:%s:%d\r\n"
>...
>        n = sendto(s, bufr, strlen(bufr), 0,
>                (struct sockaddr *)&sockname, sizeof(struct sockaddr_in) );
>
>(line 278 of miniupnpd.c).
>
>Can someone shed light on what the problem is? The application appears to work 
>fine even with this error though.

man setsockopt, search for SO_BROADCAST.


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Steve Watt KD6GGD  PP-ASEL-IA          ICBM: 121W 56' 57.5" / 37N 20' 15.3"
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