1/*	$NetBSD: uipc_syscalls_50.c,v 1.12 2022/09/28 15:32:09 msaitoh Exp $	*/
2
3/*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33
34#if defined(_KERNEL_OPT)
35#include "opt_compat_netbsd.h"
36#endif
37
38#include <sys/param.h>
39#include <sys/kernel.h>
40#include <sys/msg.h>
41#include <sys/sysctl.h>
42#include <sys/syscallargs.h>
43#include <sys/errno.h>
44#include <sys/kauth.h>
45#include <sys/proc.h>
46#include <sys/time.h>
47#include <sys/compat_stub.h>
48
49#include <net/if.h>
50
51#include <compat/net/if.h>
52#include <compat/sys/time.h>
53#include <compat/sys/socket.h>
54#include <compat/sys/sockio.h>
55
56#include <compat/common/compat_mod.h>
57
58/*ARGSUSED*/
59static int
60compat_ifdatareq(struct lwp *l, u_long cmd, void *data)
61{
62	struct if_data ifi;
63	struct ifdatareq50 *ifdr = data;
64	struct ifnet *ifp;
65	int error;
66
67	/* Validate arguments. */
68	switch (cmd) {
69	case OSIOCGIFDATA:
70	case OSIOCZIFDATA:
71		break;
72	default:
73		return ENOSYS;
74	}
75
76	ifp = ifunit(ifdr->ifdr_name);
77	if (ifp == NULL)
78		return ENXIO;
79
80	/* Do work. */
81	switch (cmd) {
82	case OSIOCGIFDATA:
83		if_export_if_data(ifp, &ifi, false);
84		ifdatan2o(&ifdr->ifdr_data, &ifi);
85		return 0;
86
87	case OSIOCZIFDATA:
88		if (l != NULL) {
89			error = kauth_authorize_network(l->l_cred,
90			    KAUTH_NETWORK_INTERFACE,
91			    KAUTH_REQ_NETWORK_INTERFACE_SETPRIV, ifp,
92			    (void *)cmd, NULL);
93			if (error != 0)
94				return error;
95		}
96		if_export_if_data(ifp, &ifi, true);
97		ifdatan2o(&ifdr->ifdr_data, &ifi);
98		/* XXX if_lastchange? */
99		return 0;
100
101	default:
102		/* Impossible due to above validation, but makes gcc happy. */
103		return ENOSYS;
104	}
105}
106
107void
108uipc_syscalls_50_init(void)
109{
110
111	MODULE_HOOK_SET(uipc_syscalls_50_hook, compat_ifdatareq);
112}
113
114void
115uipc_syscalls_50_fini(void)
116{
117
118	MODULE_HOOK_UNSET(uipc_syscalls_50_hook);
119}
120