NetBSD/sbin/ifconfig/agr.c

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/* $NetBSD: agr.c,v 1.7 2008/05/06 21:16:52 dyoung Exp $ */
/*-
* Copyright (c)2005 YAMAMOTO Takashi,
* 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/cdefs.h>
#if !defined(lint)
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__RCSID("$NetBSD: agr.c,v 1.7 2008/05/06 21:16:52 dyoung Exp $");
#endif /* !defined(lint) */
#include <sys/param.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <net/agr/if_agrioctl.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <util.h>
#include "env.h"
#include "parse.h"
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#include "extern.h"
#include "agr.h"
static int checkifname(const char *);
static void assertifname(const char *);
static int
checkifname(const char *ifname)
{
return strncmp(ifname, "agr", 3) != 0 ||
!isdigit((unsigned char)ifname[3]);
}
static void
assertifname(const char *ifname)
{
if (checkifname(ifname)) {
errx(EXIT_FAILURE, "valid only with agr(4) interfaces");
}
}
int
agrsetport(prop_dictionary_t env, prop_dictionary_t xenv)
{
char buf[IFNAMSIZ];
struct agrreq ar;
int s;
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const char *port;
const char *ifname;
struct ifreq ifr;
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int64_t cmd;
if ((s = getsock(AF_UNSPEC)) == -1)
err(EXIT_FAILURE, "%s: getsock", __func__);
assertifname(ifr.ifr_name);
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if (!prop_dictionary_get_int64(env, "agrcmd", &cmd)) {
warnx("%s.%d", __func__, __LINE__);
errno = ENOENT;
return -1;
}
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if (!prop_dictionary_get_cstring_nocopy(env, "agrport", &port)) {
warnx("%s.%d", __func__, __LINE__);
errno = ENOENT;
return -1;
}
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strlcpy(buf, port, sizeof(buf));
memset(&ifr, 0, sizeof(ifr));
if ((ifname = getifname(env)) == NULL)
err(EXIT_FAILURE, "%s: getifname", __func__);
estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
memset(&ar, 0, sizeof(ar));
ar.ar_version = AGRREQ_VERSION;
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ar.ar_cmd = cmd;
ar.ar_buf = buf;
ar.ar_buflen = strlen(buf);
ifr.ifr_data = &ar;
if (ioctl(s, SIOCSETAGR, &ifr) == -1)
err(EXIT_FAILURE, "SIOCSETAGR");
return 0;
}
void
agr_status(prop_dictionary_t env, prop_dictionary_t oenv)
{
struct agrreq ar;
void *buf = NULL;
size_t buflen = 0;
struct agrportlist *apl;
struct agrportinfo *api;
int i;
int s;
const char *ifname;
struct ifreq ifr;
if ((s = getsock(AF_UNSPEC)) == -1)
err(EXIT_FAILURE, "%s: getsock", __func__);
memset(&ifr, 0, sizeof(ifr));
if ((ifname = getifname(env)) == NULL)
err(EXIT_FAILURE, "%s: getifname", __func__);
if (checkifname(ifname))
return;
estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
again:
memset(&ar, 0, sizeof(ar));
ar.ar_version = AGRREQ_VERSION;
ar.ar_cmd = AGRCMD_PORTLIST;
ar.ar_buf = buf;
ar.ar_buflen = buflen;
ifr.ifr_data = &ar;
if (ioctl(s, SIOCGETAGR, &ifr) == -1) {
if (errno != E2BIG) {
warn("SIOCGETAGR");
return;
}
free(buf);
buf = NULL;
buflen = 0;
goto again;
}
if (buf == NULL) {
buflen = ar.ar_buflen;
buf = malloc(buflen);
if (buf == NULL) {
err(EXIT_FAILURE, "agr_status");
}
goto again;
}
apl = buf;
api = (void *)(apl + 1);
for (i = 0; i < apl->apl_nports; i++) {
char tmp[256];
snprintb(tmp, sizeof(tmp), AGRPORTINFO_BITS, api->api_flags);
printf("\tagrport: %s, flags=%s\n", api->api_ifname, tmp);
api++;
}
}