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uipc_syscalls_50.c revision 1.3.56.4 
      1 /*	$NetBSD: uipc_syscalls_50.c,v 1.3.56.4 2018/04/12 22:33:41 pgoyette 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 1.3.56.4 2018/04/12 22:33:41 pgoyette 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 #include <compat/sys/if.h>
     58 
     59 /*ARGSUSED*/
     60 static int
     61 compat_ifdatareq(struct lwp *l, u_long cmd, void *data)
     62 {
     63 	struct oifdatareq *ifdr = data;
     64 	struct ifnet *ifp;
     65 	int error;
     66 
     67 	ifp = ifunit(ifdr->ifdr_name);
     68 	if (ifp == NULL)
     69 		return ENXIO;
     70 
     71 	switch (cmd) {
     72 	case SIOCGIFDATA:
     73 		ifdatan2o(&ifdr->ifdr_data, &ifp->if_data);
     74 		return 0;
     75 
     76 	case SIOCZIFDATA:
     77 		if (l != NULL) {
     78 			error = kauth_authorize_network(l->l_cred,
     79 			    KAUTH_NETWORK_INTERFACE,
     80 			    KAUTH_REQ_NETWORK_INTERFACE_SETPRIV, ifp,
     81 			    (void *)cmd, NULL);
     82 			if (error != 0)
     83 				return error;
     84 		}
     85 		ifdatan2o(&ifdr->ifdr_data, &ifp->if_data);
     86 		/*
     87 		 * Assumes that the volatile counters that can be
     88 		 * zero'ed are at the end of if_data.
     89 		 */
     90 		memset(&ifp->if_data.ifi_ipackets, 0, sizeof(ifp->if_data) -
     91 		    offsetof(struct if_data, ifi_ipackets));
     92 		return 0;
     93 
     94 	default:
     95 		return ENOSYS;
     96 	}
     97 }
     98 
     99 /* Save and restore compat vector as needed */
    100 
    101 void
    102 if_50_init(void)
    103 {
    104 
    105 	vec_compat_ifdatareq = compat_ifdatareq;
    106 }
    107 
    108 void
    109 if_50_fini(void)
    110 {
    111 
    112 	vec_compat_ifdatareq = (void *)enosys;
    113 }
    114