Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
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#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "socket.h"
#include "byte.h"
#include "haveip6.h"
#include "errno.h"
#include "ip6.h"
#ifndef IPV6_DROP_MEMBERSHIP
#ifdef IPV6_LEAVE_GROUP
#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
#else
#undef LIBC_HAS_IP6
#endif
#endif
int socket_mcleave6(int s,const char ip[16])
{
#ifdef LIBC_HAS_IP6
struct ipv6_mreq opt;
#endif
if (ip6_isv4mapped(ip))
return socket_mcleave4(s,ip+12);
#ifdef LIBC_HAS_IP6
byte_copy(&opt.ipv6mr_multiaddr,16,ip);
opt.ipv6mr_interface=0;
return setsockopt(s,IPPROTO_IPV6,IPV6_DROP_MEMBERSHIP,&opt,sizeof opt);
#else
errno=EPROTONOSUPPORT;
return -1;
#endif
}