NetBSD/sbin/ifconfig/agr.c

196 lines
4.9 KiB
C

/* $NetBSD: agr.c,v 1.16 2021/06/21 03:14:40 christos 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)
__RCSID("$NetBSD: agr.c,v 1.16 2021/06/21 03:14:40 christos 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 "extern.h"
#include "parse.h"
#include "util.h"
static int agrsetport(prop_dictionary_t, prop_dictionary_t);
static void agr_constructor(void) __attribute__((constructor));
static int checkifname(prop_dictionary_t);
static void assertifname(prop_dictionary_t);
static struct piface agrif = PIFACE_INITIALIZER(&agrif, "agr interface",
agrsetport, "agrport", &command_root.pb_parser);
static const struct kwinst agrkw[] = {
{.k_word = "agrport", .k_type = KW_T_INT, .k_int = AGRCMD_ADDPORT,
.k_nextparser = &agrif.pif_parser}
, {.k_word = "-agrport", .k_type = KW_T_INT, .k_int = AGRCMD_REMPORT,
.k_nextparser = &agrif.pif_parser}
};
struct pkw agr = PKW_INITIALIZER(&agr, "agr", NULL, "agrcmd",
agrkw, __arraycount(agrkw), NULL);
static int
checkifname(prop_dictionary_t env)
{
const char *ifname;
if ((ifname = getifname(env)) == NULL)
return 1;
return strncmp(ifname, "agr", 3) != 0 ||
!isdigit((unsigned char)ifname[3]);
}
static void
assertifname(prop_dictionary_t env)
{
if (checkifname(env))
errx(EXIT_FAILURE, "valid only with agr(4) interfaces");
}
int
agrsetport(prop_dictionary_t env, prop_dictionary_t oenv)
{
char buf[IFNAMSIZ];
struct agrreq ar;
const char *port;
int64_t cmd;
if (!prop_dictionary_get_int64(env, "agrcmd", &cmd)) {
warnx("%s.%d", __func__, __LINE__);
errno = ENOENT;
return -1;
}
if (!prop_dictionary_get_string(env, "agrport", &port)) {
warnx("%s.%d", __func__, __LINE__);
errno = ENOENT;
return -1;
}
strlcpy(buf, port, sizeof(buf));
assertifname(env);
memset(&ar, 0, sizeof(ar));
ar.ar_version = AGRREQ_VERSION;
ar.ar_cmd = cmd;
ar.ar_buf = buf;
ar.ar_buflen = strlen(buf);
if (indirect_ioctl(env, SIOCSETAGR, &ar) == -1)
err(EXIT_FAILURE, "SIOCSETAGR");
return 0;
}
static 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;
if (checkifname(env))
return;
again:
memset(&ar, 0, sizeof(ar));
ar.ar_version = AGRREQ_VERSION;
ar.ar_cmd = AGRCMD_PORTLIST;
ar.ar_buf = buf;
ar.ar_buflen = buflen;
if (indirect_ioctl(env, SIOCGETAGR, &ar) == -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++;
}
}
static status_func_t status;
static usage_func_t usage;
static cmdloop_branch_t branch;
static void
agr_usage(prop_dictionary_t env)
{
fprintf(stderr, "\t[ agrport i ] [ -agrport i ]\n");
}
static void
agr_constructor(void)
{
status_func_init(&status, agr_status);
usage_func_init(&usage, agr_usage);
register_status(&status);
register_usage(&usage);
cmdloop_branch_init(&branch, &agr.pk_parser);
register_cmdloop_branch(&branch);
}