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*/
59 static int
compat_ifdatareq(struct lwp * l,u_long cmd,void * data)60 compat_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
107 void
uipc_syscalls_50_init(void)108 uipc_syscalls_50_init(void)
109 {
110
111 MODULE_HOOK_SET(uipc_syscalls_50_hook, compat_ifdatareq);
112 }
113
114 void
uipc_syscalls_50_fini(void)115 uipc_syscalls_50_fini(void)
116 {
117
118 MODULE_HOOK_UNSET(uipc_syscalls_50_hook);
119 }
120