1 /* $NetBSD: uipc_usrreq_70.c,v 1.5 2019/12/12 02:15:42 pgoyette Exp $ */
2
3 /*-
4 * Copyright (c) 2016 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Roy Marples.
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 __KERNEL_RCSID(0, "$NetBSD: uipc_usrreq_70.c,v 1.5 2019/12/12 02:15:42 pgoyette Exp $");
34
35 #if defined(_KERNEL_OPT)
36 #include "opt_compat_netbsd.h"
37 #endif
38
39 #include <sys/param.h>
40 #include <sys/lwp.h>
41 #include <sys/socket.h>
42 #include <sys/socketvar.h>
43 #include <sys/unpcb.h>
44 #include <sys/mbuf.h>
45 #include <sys/kauth.h>
46 #include <sys/compat_stub.h>
47
48 #include <compat/sys/socket.h>
49
50 struct mbuf *
compat_70_unp_addsockcred(struct lwp * l,struct mbuf * control)51 compat_70_unp_addsockcred(struct lwp *l, struct mbuf *control)
52 {
53 struct sockcred70 *sc;
54 struct mbuf *m;
55 void *p;
56
57 m = sbcreatecontrol1(&p, SOCKCRED70SIZE(kauth_cred_ngroups(l->l_cred)),
58 SCM_OCREDS, SOL_SOCKET, M_WAITOK);
59 if (m == NULL) {
60 return control;
61 }
62
63 sc = p;
64 sc->sc_uid = kauth_cred_getuid(l->l_cred);
65 sc->sc_euid = kauth_cred_geteuid(l->l_cred);
66 sc->sc_gid = kauth_cred_getgid(l->l_cred);
67 sc->sc_egid = kauth_cred_getegid(l->l_cred);
68 sc->sc_ngroups = kauth_cred_ngroups(l->l_cred);
69
70 for (int i = 0; i < sc->sc_ngroups; i++)
71 sc->sc_groups[i] = kauth_cred_group(l->l_cred, i);
72
73 return m_add(control, m);
74 }
75
76 void
uipc_usrreq_70_init(void)77 uipc_usrreq_70_init(void)
78 {
79
80 MODULE_HOOK_SET(uipc_unp_70_hook, compat_70_unp_addsockcred);
81 }
82
83 void
uipc_usrreq_70_fini(void)84 uipc_usrreq_70_fini(void)
85 {
86
87 MODULE_HOOK_UNSET(uipc_unp_70_hook);
88 }
89