sys/emulation/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  * $FreeBSD: src/sys/svr4/svr4_sockio.c,v 1.7 1999/12/08 12:00:48 newton Exp $
  29  * $DragonFly: src/sys/emulation/svr4/Attic/svr4_sockio.c,v 1.8 2005/12/10 16:06:20 swildner Exp $
  30  */
  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 #include <net/if.h>
  40 #include <sys/file2.h>
  41
  42 #include <emulation/43bsd/43bsd_socket.h>
  43
  44 #include "svr4.h"
  45 #include "svr4_util.h"
  46 #include "svr4_ioctl.h"
  47 #include "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(int bf)
  56 {
  57         int sf = 0;
  58         bsd_to_svr4_flag(FF_UP);
  59         bsd_to_svr4_flag(FF_BROADCAST);
  60         bsd_to_svr4_flag(FF_DEBUG);
  61         bsd_to_svr4_flag(FF_LOOPBACK);
  62         bsd_to_svr4_flag(FF_POINTOPOINT);
  63 #if defined(IFF_NOTRAILERS)
  64         bsd_to_svr4_flag(FF_NOTRAILERS);
  65 #endif
  66         bsd_to_svr4_flag(FF_RUNNING);
  67         bsd_to_svr4_flag(FF_NOARP);
  68         bsd_to_svr4_flag(FF_PROMISC);
  69         bsd_to_svr4_flag(FF_ALLMULTI);
  70         bsd_to_svr4_flag(FF_MULTICAST);
  71         return sf;
  72 }
  73
  74 int
  75 svr4_sock_ioctl(struct file *fp, struct thread *td, register_t *retval,
  76                 int fd, u_long cmd, caddr_t data)
  77 {
  78         int error;
  79
  80         *retval = 0;
  81
  82         switch (cmd) {
  83         case SVR4_SIOCGIFNUM:
  84                 {
  85                         struct ifnet *ifp;
  86                         struct ifaddr *ifa;
  87                         int ifnum = 0;
  88
  89                         /*
  90                          * This does not return the number of physical
  91                          * interfaces (if_index), but the number of interfaces
  92                          * + addresses like ifconf() does, because this number
  93                          * is used by code that will call SVR4_SIOCGIFCONF to
  94                          * find the space needed for SVR4_SIOCGIFCONF. So we
  95                          * count the number of ifreq entries that the next
  96                          * SVR4_SIOCGIFCONF will return. Maybe a more correct
  97                          * fix is to make SVR4_SIOCGIFCONF return only one
  98                          * entry per physical interface?
  99                          */
 100
 101                         TAILQ_FOREACH(ifp, &ifnet, if_link) {
 102                                 if (TAILQ_EMPTY(&ifp->if_addrhead))
 103                                         ifnum++;
 104                                 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
 105                                         ifnum++;
 106                         }
 107
 108                         DPRINTF(("SIOCGIFNUM %d\n", ifnum));
 109                         return copyout(&ifnum, data, sizeof(ifnum));
 110                 }
 111
 112         case SVR4_SIOCGIFFLAGS:
 113                 {
 114                         struct ifreq br;
 115                         struct svr4_ifreq sr;
 116
 117                         if ((error = copyin(data, &sr, sizeof(sr))) != 0)
 118                                 return error;
 119
 120                         (void) strncpy(br.ifr_name, sr.svr4_ifr_name,
 121                             sizeof(br.ifr_name));
 122                         if ((error = fo_ioctl(fp, SIOCGIFFLAGS,
 123                                             (caddr_t) &br, td)) != 0) {
 124                                 DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n",
 125                                          br.ifr_name, sr.svr4_ifr_name, error));
 126                                 return error;
 127                         }
 128
 129                         sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
 130                         DPRINTF(("SIOCGIFFLAGS %s = %x\n",
 131                                 sr.svr4_ifr_name, sr.svr4_ifr_flags));
 132                         return copyout(&sr, data, sizeof(sr));
 133                 }
 134
 135         case SVR4_SIOCGIFCONF:
 136                 {
 137                         struct svr4_ifconf sc;
 138
 139                         if ((error = copyin(data, &sc, sizeof(sc))) != 0)
 140                                 return error;
 141
 142                         DPRINTF(("ifreq %d svr4_ifreq %d ifc_len %d\n",
 143                                 sizeof(struct ifreq), sizeof(struct svr4_ifreq),
 144                                 sc.svr4_ifc_len));
 145
 146                         if ((error = fo_ioctl(fp, OSIOCGIFCONF,
 147                                             (caddr_t) &sc, td)) != 0)
 148                                 return error;
 149
 150                         DPRINTF(("SIOCGIFCONF\n"));
 151                         return 0;
 152                 }
 153
 154
 155         default:
 156                 DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
 157                 return 0;       /* ENOSYS really */
 158         }
 159 }