busybox/libbb/create_icmp6_socket.c
Eric Andersen 51b8bd68bb This patch from Bart Visscher <magick@linux-fan.com> adds
IPV6 support to busybox.  This patch does the following:
    * Add IPv6 support to libbb
    * Enable IPv6 interface address display
    * Add IPv6 config option
    * Adds ping6, an adaptation of the ping applet for IPv6
    * Adds support routines for ping6:
	- xgethostbyname2
	- create_icmp6_socket
    * Adds ifconfig support for IPv6
    * Add support IPv6 to netstat
    * Add IPv6 support to route
Thanks Bart!
2002-07-03 11:46:38 +00:00

40 lines
867 B
C

/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* create raw socket for icmp (IPv6 version) protocol test permision
* and drop root privilegies if running setuid
*
*/
#include <sys/types.h>
#include <netdb.h>
#include <sys/socket.h>
#include <errno.h>
#include <unistd.h>
#include "libbb.h"
#if CONFIG_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" */
if ((sock = socket(AF_INET6, SOCK_RAW,
(proto ? proto->p_proto : IPPROTO_ICMPV6))) < 0) {
if (errno == EPERM)
error_msg_and_die("permission denied. (are you root?)");
else
perror_msg_and_die(can_not_create_raw_socket);
}
/* drop root privs if running setuid */
setuid(getuid());
return sock;
}
#endif