source: branches/stable/mindi-busybox/libbb/create_icmp6_socket.c @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 878 bytes
Line 
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 <errno.h>
14#include <unistd.h>
15#include "libbb.h"
16
17#ifdef CONFIG_FEATURE_IPV6
18int create_icmp6_socket(void)
19{
20    struct protoent *proto;
21    int sock;
22
23    proto = getprotobyname("ipv6-icmp");
24    /* if getprotobyname failed, just silently force
25     * proto->p_proto to have the correct value for "ipv6-icmp" */
26    if ((sock = socket(AF_INET6, SOCK_RAW,
27            (proto ? proto->p_proto : IPPROTO_ICMPV6))) < 0) {
28        if (errno == EPERM)
29            bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
30        else
31            bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
32    }
33
34    /* drop root privs if running setuid */
35    setuid(getuid());
36
37    return sock;
38}
39#endif
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