/*      $NetBSD: uipc_syscalls_50.c,v 1.12 2022/09/28 15:32:09 msaitoh Exp $    */

/*-
 * Copyright (c) 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Christos Zoulas.
 *
 * 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>

#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
#endif

#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/msg.h>
#include <sys/sysctl.h>
#include <sys/syscallargs.h>
#include <sys/errno.h>
#include <sys/kauth.h>
#include <sys/proc.h>
#include <sys/time.h>
#include <sys/compat_stub.h>

#include <net/if.h>

#include <compat/net/if.h>
#include <compat/sys/time.h>
#include <compat/sys/socket.h>
#include <compat/sys/sockio.h>

#include <compat/common/compat_mod.h>

/*ARGSUSED*/
static int
compat_ifdatareq(struct lwp *l, u_long cmd, void *data)
{
        struct if_data ifi;
        struct ifdatareq50 *ifdr = data;
        struct ifnet *ifp;
        int error;

        /* Validate arguments. */
        switch (cmd) {
        case OSIOCGIFDATA:
        case OSIOCZIFDATA:
                break;
        default:
                return ENOSYS;
        }

        ifp = ifunit(ifdr->ifdr_name);
        if (ifp == NULL)
                return ENXIO;

        /* Do work. */
        switch (cmd) {
        case OSIOCGIFDATA:
                if_export_if_data(ifp, &ifi, false);
                ifdatan2o(&ifdr->ifdr_data, &ifi);
                return 0;

        case OSIOCZIFDATA:
                if (l != NULL) {
                        error = kauth_authorize_network(l->l_cred,
                            KAUTH_NETWORK_INTERFACE,
                            KAUTH_REQ_NETWORK_INTERFACE_SETPRIV, ifp,
                            (void *)cmd, NULL);
                        if (error != 0)
                                return error;
                }
                if_export_if_data(ifp, &ifi, true);
                ifdatan2o(&ifdr->ifdr_data, &ifi);
                /* XXX if_lastchange? */
                return 0;

        default:
                /* Impossible due to above validation, but makes gcc happy. */
                return ENOSYS;
        }
}

void
uipc_syscalls_50_init(void)
{

        MODULE_HOOK_SET(uipc_syscalls_50_hook, compat_ifdatareq);
}

void
uipc_syscalls_50_fini(void)
{
 
        MODULE_HOOK_UNSET(uipc_syscalls_50_hook);
}