Initial public busybox upstream commit
[busybox4maemo] / libbb / create_icmp6_socket.c
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
9 #include "libbb.h"
10
11 #if ENABLE_FEATURE_IPV6
12 int create_icmp6_socket(void)
13 {
14         int sock;
15 #if 0
16         struct protoent *proto;
17         proto = getprotobyname("ipv6-icmp");
18         /* if getprotobyname failed, just silently force
19          * proto->p_proto to have the correct value for "ipv6-icmp" */
20         sock = socket(AF_INET6, SOCK_RAW,
21                         (proto ? proto->p_proto : IPPROTO_ICMPV6));
22 #else
23         sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
24 #endif
25         if (sock < 0) {
26                 if (errno == EPERM)
27                         bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
28                 bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
29         }
30
31         /* drop root privs if running setuid */
32         xsetuid(getuid());
33
34         return sock;
35 }
36 #endif