/* $NetBSD: h_canutils.c,v 1.4 2019/10/13 07:46:16 mrg Exp $ */
/*-
* Copyright (c) 2017 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Manuel Bouyer
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: h_canutils.c,v 1.4 2019/10/13 07:46:16 mrg Exp $");
#endif /* not lint */
#include <sys/types.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <sys/sockio.h>
#include <sys/param.h>
#include <atf-c.h>
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <net/if.h>
#include <netcan/can.h>
#include <rump/rump.h>
#include <rump/rump_syscalls.h>
#include "h_macros.h"
#include "h_canutils.h"
void
cancfg_rump_createif(const char *ifname)
{
int s, rv;
struct ifreq ifr;
s = -1;
if ((s = rump_sys_socket(AF_CAN, SOCK_RAW, CAN_RAW)) < 0) {
atf_tc_fail_errno("if config socket");
}
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifname, IFNAMSIZ-1);
ifr.ifr_name[IFNAMSIZ - 1] = '\0';
if ((rv = rump_sys_ioctl(s, SIOCIFCREATE, &ifr)) < 0) {
atf_tc_fail_errno("if config create");
}
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifname, IFNAMSIZ-1);
ifr.ifr_name[IFNAMSIZ - 1] = '\0';
if ((rv = rump_sys_ioctl(s, SIOCGIFFLAGS, &ifr)) < 0) {
atf_tc_fail_errno("if config get flags");
}
ifr.ifr_flags |= IFF_UP;
if ((rv = rump_sys_ioctl(s, SIOCSIFFLAGS, &ifr)) < 0) {
atf_tc_fail_errno("if config set flags");
}
}
int
can_recvfrom(int s, struct can_frame *cf, int *len, struct sockaddr_can *sa)
{
socklen_t salen;
fd_set rfds;
struct timeval tmout;
int rv;
memset(cf, 0, sizeof(struct can_frame));
FD_ZERO(&rfds);
FD_SET(s, &rfds);
/* wait 1 second for the message (in some tests we expect no message) */
tmout.tv_sec = 1;
tmout.tv_usec = 0;
rv = rump_sys_select(s + 1, &rfds, NULL, NULL, &tmout);
switch(rv) {
case -1:
atf_tc_fail_errno("select");
/* NOTREACHED */
case 0:
/* timeout */
errno = EWOULDBLOCK;
return -1;
default: break;
}
ATF_CHECK_MSG(FD_ISSET(s, &rfds), "select returns but s not in set");
salen = sizeof(struct sockaddr_can);
if (( *len = rump_sys_recvfrom(s, cf, sizeof(struct can_frame),
0, (struct sockaddr *)sa, &salen)) < 0) {
atf_tc_fail_errno("recvfrom");
}
ATF_CHECK_MSG(rv > 0, "short read on socket");
ATF_CHECK_MSG(sa->can_family == AF_CAN,
"recvfrom provided wrong %d family", sa->can_family);
ATF_CHECK_MSG(salen == sizeof(struct sockaddr_can),
"recvfrom provided wrong size %d (!= %zu)", salen, sizeof(sa));
return 0;
}
int
can_read(int s, struct can_frame *cf, int *len)
{
fd_set rfds;
struct timeval tmout;
int rv;
memset(cf, 0, sizeof(struct can_frame));
FD_ZERO(&rfds);
FD_SET(s, &rfds);
/* wait 1 second for the message (in some tests we expect no message) */
tmout.tv_sec = 1;
tmout.tv_usec = 0;
rv = rump_sys_select(s + 1, &rfds, NULL, NULL, &tmout);
switch(rv) {
case -1:
atf_tc_fail_errno("select");
/* NOTREACHED */
case 0:
/* timeout */
errno = EWOULDBLOCK;
return -1;
default: break;
}
ATF_CHECK_MSG(FD_ISSET(s, &rfds), "select returns but s not in set");
if (( *len = rump_sys_read(s, cf, sizeof(struct can_frame))) < 0) {
atf_tc_fail_errno("read");
}
ATF_CHECK_MSG(rv > 0, "short read on socket");
return 0;
}
int
can_bind(int s, const char *ifname)
{
struct ifreq ifr;
struct sockaddr_can sa;
strcpy(ifr.ifr_name, ifname );
if (rump_sys_ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
atf_tc_fail_errno("SIOCGIFINDEX");
}
ATF_CHECK_MSG(ifr.ifr_ifindex > 0, "%s index is %d (not > 0)",
ifname, ifr.ifr_ifindex);
sa.can_family = AF_CAN;
sa.can_ifindex = ifr.ifr_ifindex;
if (rump_sys_bind(s, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
atf_tc_fail_errno("bind");
}
return ifr.ifr_ifindex;
}
int
can_socket_with_own(void)
{
int s;
int v;
if ((s = rump_sys_socket(AF_CAN, SOCK_RAW, CAN_RAW)) < 0) {
atf_tc_fail_errno("CAN socket");
}
v = 1;
if (rump_sys_setsockopt(s, SOL_CAN_RAW, CAN_RAW_RECV_OWN_MSGS,
&v, sizeof(v)) < 0) {
atf_tc_fail_errno("setsockopt(CAN_RAW_RECV_OWN_MSGS)");
}
return s;
}
