1 /* $NetBSD: uipc_syscalls_50.c,v 1.5 2018/04/26 08:11:18 roy 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: uipc_syscalls_50.c,v 1.5 2018/04/26 08:11:18 roy Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/kernel.h> 44 #include <sys/msg.h> 45 #include <sys/sysctl.h> 46 #include <sys/syscallargs.h> 47 #include <sys/errno.h> 48 #include <sys/kauth.h> 49 #include <sys/proc.h> 50 #include <sys/time.h> 51 52 #include <net/if.h> 53 54 #include <compat/sys/time.h> 55 #include <compat/sys/socket.h> 56 #include <compat/sys/sockio.h> 57 58 /*ARGSUSED*/ 59 static int 60 compat_ifdatareq(struct lwp *l, u_long cmd, void *data) 61 { 62 struct oifdatareq *ifdr = data; 63 struct ifnet *ifp; 64 int error; 65 66 /* Validate arguments. */ 67 switch (cmd) { 68 case SIOCGIFDATA: 69 case SIOCZIFDATA: 70 ifp = ifunit(ifdr->ifdr_name); 71 if (ifp == NULL) 72 return ENXIO; 73 break; 74 default: 75 return ENOSYS; 76 } 77 78 /* Do work. */ 79 switch (cmd) { 80 case SIOCGIFDATA: 81 ifdatan2o(&ifdr->ifdr_data, &ifp->if_data); 82 return 0; 83 84 case SIOCZIFDATA: 85 if (l != NULL) { 86 error = kauth_authorize_network(l->l_cred, 87 KAUTH_NETWORK_INTERFACE, 88 KAUTH_REQ_NETWORK_INTERFACE_SETPRIV, ifp, 89 (void *)cmd, NULL); 90 if (error != 0) 91 return error; 92 } 93 ifdatan2o(&ifdr->ifdr_data, &ifp->if_data); 94 /* 95 * Assumes that the volatile counters that can be 96 * zero'ed are at the end of if_data. 97 */ 98 memset(&ifp->if_data.ifi_ipackets, 0, sizeof(ifp->if_data) - 99 offsetof(struct if_data, ifi_ipackets)); 100 return 0; 101 102 default: 103 /* Impossible due to above validation, but makes gcc happy. */ 104 return ENOSYS; 105 } 106 } 107 108 void 109 uipc_syscalls_50_init(void) 110 { 111 vec_compat_ifdatareq = compat_ifdatareq; 112 } 113 114 void 115 uipc_syscalls_50_fini(void) 116 { 117 vec_compat_ifdatareq = (void *)enosys; 118 } 119