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 * 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 77 uipc_usrreq_70_init(void) 78 { 79 80 MODULE_HOOK_SET(uipc_unp_70_hook, compat_70_unp_addsockcred); 81 } 82 83 void 84 uipc_usrreq_70_fini(void) 85 { 86 87 MODULE_HOOK_UNSET(uipc_unp_70_hook); 88 } 89