mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
0ef64bdb40
This change retains "or later" state! No licensing _changes_ here, only form is adjusted (article, space between "GPL" and "v2" and so on). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
37 lines
842 B
C
37 lines
842 B
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Utility routines.
|
|
*
|
|
* create raw socket for icmp protocol
|
|
* and drop root privileges if running setuid
|
|
*
|
|
* Licensed under GPLv2, see file LICENSE in this source tree.
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
|
|
int FAST_FUNC create_icmp_socket(void)
|
|
{
|
|
int sock;
|
|
#if 0
|
|
struct protoent *proto;
|
|
proto = getprotobyname("icmp");
|
|
/* if getprotobyname failed, just silently force
|
|
* proto->p_proto to have the correct value for "icmp" */
|
|
sock = socket(AF_INET, SOCK_RAW,
|
|
(proto ? proto->p_proto : 1)); /* 1 == ICMP */
|
|
#else
|
|
sock = socket(AF_INET, SOCK_RAW, 1); /* 1 == ICMP */
|
|
#endif
|
|
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;
|
|
}
|