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