sys/compat/svr4/svr4_sockio.c

   1 /*      $NetBSD: svr4_sockio.c,v 1.34 2008/03/21 21:54:59 ad Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1995, 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 __KERNEL_RCSID(0, "$NetBSD: svr4_sockio.c,v 1.34 2008/03/21 21:54:59 ad Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/proc.h>
  37 #include <sys/systm.h>
  38 #include <sys/file.h>
  39 #include <sys/filedesc.h>
  40 #include <sys/ioctl.h>
  41 #include <sys/termios.h>
  42 #include <sys/tty.h>
  43 #include <sys/socket.h>
  44 #include <sys/mount.h>
  45 #include <net/if.h>
  46 #include <sys/malloc.h>
  47
  48 #include <sys/syscallargs.h>
  49
  50 #include <compat/sys/socket.h>
  51 #include <compat/sys/sockio.h>
  52
  53 #include <compat/svr4/svr4_types.h>
  54 #include <compat/svr4/svr4_util.h>
  55 #include <compat/svr4/svr4_signal.h>
  56 #include <compat/svr4/svr4_lwp.h>
  57 #include <compat/svr4/svr4_ucontext.h>
  58 #include <compat/svr4/svr4_syscallargs.h>
  59 #include <compat/svr4/svr4_stropts.h>
  60 #include <compat/svr4/svr4_ioctl.h>
  61 #include <compat/svr4/svr4_sockio.h>
  62
  63 static int bsd_to_svr4_flags(int);
  64
  65 #define bsd_to_svr4_flag(a) \
  66         if (bf & __CONCAT(I,a)) sf |= __CONCAT(SVR4_I,a)
  67
  68 static int
  69 bsd_to_svr4_flags(int bf)
  70 {
  71         int sf = 0;
  72         bsd_to_svr4_flag(FF_UP);
  73         bsd_to_svr4_flag(FF_BROADCAST);
  74         bsd_to_svr4_flag(FF_DEBUG);
  75         bsd_to_svr4_flag(FF_LOOPBACK);
  76         bsd_to_svr4_flag(FF_POINTOPOINT);
  77         bsd_to_svr4_flag(FF_NOTRAILERS);
  78         bsd_to_svr4_flag(FF_RUNNING);
  79         bsd_to_svr4_flag(FF_NOARP);
  80         bsd_to_svr4_flag(FF_PROMISC);
  81         bsd_to_svr4_flag(FF_ALLMULTI);
  82         bsd_to_svr4_flag(FF_MULTICAST);
  83         return sf;
  84 }
  85
  86 int
  87 svr4_count_ifnum(struct ifnet *ifp)
  88 {
  89         struct ifaddr *ifa;
  90         int ifnum = 0;
  91
  92         IFADDR_FOREACH(ifa, ifp)
  93                 ifnum++;
  94
  95         return MAX(1, ifnum);
  96 }
  97
  98 int
  99 svr4_sock_ioctl(file_t *fp, struct lwp *l, register_t *retval,
 100     int fd, u_long cmd, void *data)
 101 {
 102         int error;
 103         int (*ctl)(file_t *, u_long,  void *) = fp->f_ops->fo_ioctl;
 104
 105         *retval = 0;
 106
 107         switch (cmd) {
 108         case SVR4_SIOCGLIFNUM:
 109                 {
 110                         struct ifnet *ifp;
 111                         struct svr4_lifnum lifnum;
 112
 113                         error = copyin(data, &lifnum, sizeof(lifnum));
 114                         if (error)
 115                                 return error;
 116
 117                         lifnum.lifn_count = 0;
 118                         /* XXX: We don't pay attention to family or flags */
 119                         IFNET_FOREACH(ifp)
 120                                 lifnum.lifn_count += svr4_count_ifnum(ifp);
 121
 122                         DPRINTF(("SIOCGLIFNUM [family=%d,flags=%d,count=%d]\n",
 123                             lifnum.lifn_family, lifnum.lifn_flags,
 124                             lifnum.lifn_count));
 125                         return copyout(&lifnum, data, sizeof(lifnum));
 126                 }
 127
 128         case SVR4_SIOCGIFNUM:
 129                 {
 130                         struct ifnet *ifp;
 131                         int ifnum = 0;
 132
 133                         /*
 134                          * This does not return the number of physical
 135                          * interfaces (if_index), but the number of interfaces
 136                          * + addresses like ifconf() does, because this number
 137                          * is used by code that will call SVR4_SIOCGIFCONF to
 138                          * find the space needed for SVR4_SIOCGIFCONF. So we
 139                          * count the number of ifreq entries that the next
 140                          * SVR4_SIOCGIFCONF will return. Maybe a more correct
 141                          * fix is to make SVR4_SIOCGIFCONF return only one
 142                          * entry per physical interface?
 143                          */
 144
 145                         IFNET_FOREACH(ifp)
 146                                 ifnum += svr4_count_ifnum(ifp);
 147
 148                         DPRINTF(("SIOCGIFNUM %d\n", ifnum));
 149                         return copyout(&ifnum, data, sizeof(ifnum));
 150                 }
 151
 152         case SVR4_SIOCGIFFLAGS:
 153                 {
 154                         struct oifreq br;
 155                         struct svr4_ifreq sr;
 156
 157                         if ((error = copyin(data, &sr, sizeof(sr))) != 0)
 158                                 return error;
 159
 160                         (void) strncpy(br.ifr_name, sr.svr4_ifr_name,
 161                             sizeof(br.ifr_name));
 162
 163                         if ((error = (*ctl)(fp, SIOCGIFFLAGS, &br)) != 0) {
 164                                 DPRINTF(("SIOCGIFFLAGS %s: error %d\n",
 165                                          sr.svr4_ifr_name, error));
 166                                 return error;
 167                         }
 168
 169                         sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
 170                         DPRINTF(("SIOCGIFFLAGS %s = %x\n",
 171                                 sr.svr4_ifr_name, sr.svr4_ifr_flags));
 172                         return copyout(&sr, data, sizeof(sr));
 173                 }
 174
 175         case SVR4_SIOCGIFCONF:
 176                 {
 177                         struct svr4_ifconf sc;
 178
 179                         if ((error = copyin(data, &sc, sizeof(sc))) != 0)
 180                                 return error;
 181
 182                         DPRINTF(("ifreq %ld svr4_ifreq %ld ifc_len %d\n",
 183                                 (unsigned long)sizeof(struct oifreq),
 184                                 (unsigned long)sizeof(struct svr4_ifreq),
 185                                 sc.svr4_ifc_len));
 186
 187                         if ((error = (*ctl)(fp, OOSIOCGIFCONF, &sc)) != 0)
 188                                 return error;
 189
 190                         DPRINTF(("SIOCGIFCONF\n"));
 191                         return 0;
 192                 }
 193
 194
 195         default:
 196                 DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
 197                 return 0;       /* ENOSYS really */
 198         }
 199 }