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