| /* vi: set sw=4 ts=4: */ |
| /* |
| * Utility routines. |
| * |
| * create raw socket for icmp (IPv6 version) protocol test permission |
| * and drop root privileges if running setuid |
| * |
| */ |
| |
| //#include <sys/types.h> |
| //#include <netdb.h> |
| //#include <sys/socket.h> |
| #include "libbb.h" |
| |
| #if ENABLE_FEATURE_IPV6 |
| int create_icmp6_socket(void) |
| { |
| struct protoent *proto; |
| int sock; |
| |
| proto = getprotobyname("ipv6-icmp"); |
| /* if getprotobyname failed, just silently force |
| * proto->p_proto to have the correct value for "ipv6-icmp" */ |
| sock = socket(AF_INET6, SOCK_RAW, |
| (proto ? proto->p_proto : IPPROTO_ICMPV6)); |
| if (sock < 0) { |
| if (errno == EPERM) |
| bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); |
| bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket); |
| } |
| |
| /* drop root privs if running setuid */ |
| xsetuid(getuid()); |
| |
| return sock; |
| } |
| #endif |
