1/* vi: set sw=4 ts=4: */
2/*
3 * Utility routines.
4 *
5 * create raw socket for icmp (IPv6 version) protocol
6 * and drop root privileges if running setuid
7 *
8 * Licensed under GPLv2, see file LICENSE in this tarball for details.
9 */
10
11#include "libbb.h"
12
13#if ENABLE_FEATURE_IPV6
14int FAST_FUNC create_icmp6_socket(void)
15{
16	int sock;
17#if 0
18	struct protoent *proto;
19	proto = getprotobyname("ipv6-icmp");
20	/* if getprotobyname failed, just silently force
21	 * proto->p_proto to have the correct value for "ipv6-icmp" */
22	sock = socket(AF_INET6, SOCK_RAW,
23			(proto ? proto->p_proto : IPPROTO_ICMPV6));
24#else
25	sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
26#endif
27	if (sock < 0) {
28		if (errno == EPERM)
29			bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
30		bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
31	}
32
33	/* drop root privs if running setuid */
34	xsetuid(getuid());
35
36	return sock;
37}
38#endif
39