1 /* $NetBSD: uipc_syscalls_50.c,v 1.11 2020/01/29 05:48:22 thorpej 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/sys/time.h> 52 #include <compat/sys/socket.h> 53 #include <compat/sys/sockio.h> 54 55 #include <compat/common/compat_mod.h> 56 57 /*ARGSUSED*/ 58 static int 59 compat_ifdatareq(struct lwp *l, u_long cmd, void *data) 60 { 61 struct if_data ifi; 62 struct oifdatareq *ifdr = data; 63 struct ifnet *ifp; 64 int error; 65 66 /* Validate arguments. */ 67 switch (cmd) { 68 case OSIOCGIFDATA: 69 case OSIOCZIFDATA: 70 break; 71 default: 72 return ENOSYS; 73 } 74 75 ifp = ifunit(ifdr->ifdr_name); 76 if (ifp == NULL) 77 return ENXIO; 78 79 /* Do work. */ 80 switch (cmd) { 81 case OSIOCGIFDATA: 82 if_export_if_data(ifp, &ifi, false); 83 ifdatan2o(&ifdr->ifdr_data, &ifi); 84 return 0; 85 86 case OSIOCZIFDATA: 87 if (l != NULL) { 88 error = kauth_authorize_network(l->l_cred, 89 KAUTH_NETWORK_INTERFACE, 90 KAUTH_REQ_NETWORK_INTERFACE_SETPRIV, ifp, 91 (void *)cmd, NULL); 92 if (error != 0) 93 return error; 94 } 95 if_export_if_data(ifp, &ifi, true); 96 ifdatan2o(&ifdr->ifdr_data, &ifi); 97 /* XXX if_lastchange? */ 98 return 0; 99 100 default: 101 /* Impossible due to above validation, but makes gcc happy. */ 102 return ENOSYS; 103 } 104 } 105 106 void 107 uipc_syscalls_50_init(void) 108 { 109 110 MODULE_HOOK_SET(uipc_syscalls_50_hook, compat_ifdatareq); 111 } 112 113 void 114 uipc_syscalls_50_fini(void) 115 { 116 117 MODULE_HOOK_UNSET(uipc_syscalls_50_hook); 118 } 119