sys/compat/svr4/svr4_sockio.c

   1 /*-
   2  * Copyright (c) 1998 Mark Newton
   3  * Copyright (c) 1995 Christos Zoulas
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __FBSDID("$FreeBSD$");
  31
  32 #include <sys/param.h>
  33 #include <sys/proc.h>
  34 #include <sys/systm.h>
  35 #include <sys/file.h>
  36 #include <sys/filedesc.h>
  37 #include <sys/sockio.h>
  38 #include <sys/socket.h>
  39
  40 #include <net/if.h>
  41 #include <net/if_var.h>
  42 #include <net/vnet.h>
  43
  44 #include <compat/svr4/svr4.h>
  45 #include <compat/svr4/svr4_util.h>
  46 #include <compat/svr4/svr4_ioctl.h>
  47 #include <compat/svr4/svr4_sockio.h>
  48
  49 static int bsd_to_svr4_flags(int);
  50
  51 #define bsd_to_svr4_flag(a) \
  52         if (bf & __CONCAT(I,a)) sf |= __CONCAT(SVR4_I,a)
  53
  54 static int
  55 bsd_to_svr4_flags(bf)
  56         int bf;
  57 {
  58         int sf = 0;
  59         bsd_to_svr4_flag(FF_UP);
  60         bsd_to_svr4_flag(FF_BROADCAST);
  61         bsd_to_svr4_flag(FF_DEBUG);
  62         bsd_to_svr4_flag(FF_LOOPBACK);
  63         bsd_to_svr4_flag(FF_POINTOPOINT);
  64 #if defined(IFF_NOTRAILERS)
  65         bsd_to_svr4_flag(FF_NOTRAILERS);
  66 #endif
  67         if (bf & IFF_DRV_RUNNING)
  68                 sf |= SVR4_IFF_RUNNING;
  69         bsd_to_svr4_flag(FF_NOARP);
  70         bsd_to_svr4_flag(FF_PROMISC);
  71         bsd_to_svr4_flag(FF_ALLMULTI);
  72         bsd_to_svr4_flag(FF_MULTICAST);
  73         return sf;
  74 }
  75
  76 #define OSIOCGIFCONF    _IOWR('i', 20, struct ifconf)
  77
  78 int
  79 svr4_sock_ioctl(fp, td, retval, fd, cmd, data)
  80         struct file *fp;
  81         struct thread *td;
  82         register_t *retval;
  83         int fd;
  84         u_long cmd;
  85         caddr_t data;
  86 {
  87         int error;
  88
  89         *retval = 0;
  90
  91         switch (cmd) {
  92         case SVR4_SIOCGIFNUM:
  93                 {
  94                         struct ifnet *ifp;
  95                         struct ifaddr *ifa;
  96                         int ifnum = 0;
  97
  98                         /*
  99                          * This does not return the number of physical
 100                          * interfaces (if_index), but the number of interfaces
 101                          * + addresses like ifconf() does, because this number
 102                          * is used by code that will call SVR4_SIOCGIFCONF to
 103                          * find the space needed for SVR4_SIOCGIFCONF. So we
 104                          * count the number of ifreq entries that the next
 105                          * SVR4_SIOCGIFCONF will return. Maybe a more correct
 106                          * fix is to make SVR4_SIOCGIFCONF return only one
 107                          * entry per physical interface?
 108                          */
 109                         IFNET_RLOCK();
 110                         TAILQ_FOREACH(ifp, &V_ifnet, if_link)
 111                                 if (TAILQ_EMPTY(&ifp->if_addrhead))
 112                                         ifnum++;
 113                                 else
 114                                         TAILQ_FOREACH(ifa, &ifp->if_addrhead,
 115                                             ifa_link)
 116                                                 ifnum++;
 117                         IFNET_RUNLOCK();
 118                         DPRINTF(("SIOCGIFNUM %d\n", ifnum));
 119                         return copyout(&ifnum, data, sizeof(ifnum));
 120                 }
 121
 122         case SVR4_SIOCGIFFLAGS:
 123                 {
 124                         struct ifreq br;
 125                         struct svr4_ifreq sr;
 126
 127                         if ((error = copyin(data, &sr, sizeof(sr))) != 0)
 128                                 return error;
 129
 130                         (void) strlcpy(br.ifr_name, sr.svr4_ifr_name,
 131                             sizeof(br.ifr_name));
 132                         if ((error = fo_ioctl(fp, SIOCGIFFLAGS,
 133                                             (caddr_t) &br, td->td_ucred,
 134                                             td)) != 0) {
 135                                 DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n",
 136                                          br.ifr_name, sr.svr4_ifr_name, error));
 137                                 return error;
 138                         }
 139
 140                         sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
 141                         DPRINTF(("SIOCGIFFLAGS %s = %x\n",
 142                                 sr.svr4_ifr_name, sr.svr4_ifr_flags));
 143                         return copyout(&sr, data, sizeof(sr));
 144                 }
 145
 146         case SVR4_SIOCGIFCONF:
 147                 {
 148                         struct svr4_ifconf sc;
 149
 150                         if ((error = copyin(data, &sc, sizeof(sc))) != 0)
 151                                 return error;
 152
 153                         DPRINTF(("ifreq %d svr4_ifreq %d ifc_len %d\n",
 154                                 sizeof(struct ifreq), sizeof(struct svr4_ifreq),
 155                                 sc.svr4_ifc_len));
 156
 157                         if ((error = fo_ioctl(fp, OSIOCGIFCONF,
 158                                             (caddr_t) &sc, td->td_ucred,
 159                                             td)) != 0)
 160                                 return error;
 161
 162                         DPRINTF(("SIOCGIFCONF\n"));
 163                         return 0;
 164                 }
 165
 166
 167         default:
 168                 DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
 169                 return 0;       /* ENOSYS really */
 170         }
 171 }