1 /* vi: set sw=4 ts=4: */
5 * create raw socket for icmp protocol test permision
6 * and drop root privilegies if running setuid
10 #include <sys/types.h>
12 #include <sys/socket.h>
17 int create_icmp_socket(void)
19 struct protoent *proto;
22 proto = getprotobyname("icmp");
23 /* if getprotobyname failed, just silently force
24 * proto->p_proto to have the correct value for "icmp" */
25 if ((sock = socket(AF_INET, SOCK_RAW,
26 (proto ? proto->p_proto : 1))) < 0) { /* 1 == ICMP */
28 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);
33 /* drop root privs if running setuid */