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/*
* dhcpcd - DHCP client daemon
* Copyright (c) 2006-2012 Roy Marples <roy@marples.name>
* All rights reserved
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/utsname.h>
#include <netinet/in.h>
#include <syslog.h>
#include "platform.h"
#ifndef SYS_NMLN /* OSX */
# define SYS_NMLN 256
#endif
static char march[SYS_NMLN];
char *
hardware_platform(void)
{
int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
size_t len = sizeof(march);
if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
march, &len, NULL, 0) != 0)
return NULL;
return march;
}
static int
inet6_sysctl(int code)
{
int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, 0 };
int val;
size_t size;
mib[3] = code;
size = sizeof(val);
if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), &val, &size, NULL, 0) == -1)
return -1;
return val;
}
int
check_ipv6(const char *ifname)
{
/* BSD doesn't support these values per iface, so just reutrn 1 */
if (ifname)
return 1;
if (inet6_sysctl(IPV6CTL_ACCEPT_RTADV) != 1) {
syslog(LOG_WARNING,
"Kernel is not configured to accept IPv6 RAs");
return 0;
}
if (inet6_sysctl(IPV6CTL_FORWARDING) != 0) {
syslog(LOG_WARNING,
"Kernel is configured as a router, not a host");
return 0;
}
return 1;
}
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