svr4_sockio.c

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    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  * $FreeBSD$
   29  */
   30 
   31 #include <sys/param.h>
   32 #include <sys/proc.h>
   33 #include <sys/systm.h>
   34 #include <sys/file.h>
   35 #include <sys/filedesc.h>
   36 #include <sys/sockio.h>
   37 #include <sys/socket.h>
   38 #include <net/if.h>
   39 
   40 
   41 #include <svr4/svr4.h>
   42 #include <svr4/svr4_util.h>
   43 #include <svr4/svr4_ioctl.h>
   44 #include <svr4/svr4_sockio.h>
   45 
   46 static int bsd_to_svr4_flags __P((int));
   47 
   48 #define bsd_to_svr4_flag(a) \
   49         if (bf & __CONCAT(I,a)) sf |= __CONCAT(SVR4_I,a)
   50 
   51 static int
   52 bsd_to_svr4_flags(bf)
   53         int bf;
   54 {
   55         int sf = 0;
   56         bsd_to_svr4_flag(FF_UP);
   57         bsd_to_svr4_flag(FF_BROADCAST);
   58         bsd_to_svr4_flag(FF_DEBUG);
   59         bsd_to_svr4_flag(FF_LOOPBACK);
   60         bsd_to_svr4_flag(FF_POINTOPOINT);
   61 #if defined(IFF_NOTRAILERS)
   62         bsd_to_svr4_flag(FF_NOTRAILERS);
   63 #endif
   64         bsd_to_svr4_flag(FF_RUNNING);
   65         bsd_to_svr4_flag(FF_NOARP);
   66         bsd_to_svr4_flag(FF_PROMISC);
   67         bsd_to_svr4_flag(FF_ALLMULTI);
   68         bsd_to_svr4_flag(FF_MULTICAST);
   69         return sf;
   70 }
   71 
   72 int
   73 svr4_sock_ioctl(fp, p, retval, fd, cmd, data)
   74         struct file *fp;
   75         struct proc *p;
   76         register_t *retval;
   77         int fd;
   78         u_long cmd;
   79         caddr_t data;
   80 {
   81         int error;
   82 
   83         *retval = 0;
   84 
   85         switch (cmd) {
   86         case SVR4_SIOCGIFNUM:
   87                 {
   88                         struct ifnet *ifp;
   89                         struct ifaddr *ifa;
   90                         int ifnum = 0;
   91 
   92                         /*
   93                          * This does not return the number of physical
   94                          * interfaces (if_index), but the number of interfaces
   95                          * + addresses like ifconf() does, because this number
   96                          * is used by code that will call SVR4_SIOCGIFCONF to
   97                          * find the space needed for SVR4_SIOCGIFCONF. So we
   98                          * count the number of ifreq entries that the next
   99                          * SVR4_SIOCGIFCONF will return. Maybe a more correct
  100                          * fix is to make SVR4_SIOCGIFCONF return only one
  101                          * entry per physical interface?
  102                          */
  103 
  104                         for (ifp = ifnet.tqh_first;
  105                              ifp != 0; ifp = ifp->if_link.tqe_next)
  106                                 if ((ifa = ifp->if_addrhead.tqh_first) == NULL)
  107                                         ifnum++;
  108                                 else
  109                                         for (;ifa != NULL;
  110                                             ifa = ifa->ifa_link.tqe_next)
  111                                                 ifnum++;
  112 
  113 
  114                         DPRINTF(("SIOCGIFNUM %d\n", ifnum));
  115                         return copyout(&ifnum, data, sizeof(ifnum));
  116                 }
  117 
  118         case SVR4_SIOCGIFFLAGS:
  119                 {
  120                         struct ifreq br;
  121                         struct svr4_ifreq sr;
  122 
  123                         if ((error = copyin(data, &sr, sizeof(sr))) != 0)
  124                                 return error;
  125 
  126                         (void) strncpy(br.ifr_name, sr.svr4_ifr_name,
  127                             sizeof(br.ifr_name));
  128                         if ((error = fo_ioctl(fp, SIOCGIFFLAGS, 
  129                                             (caddr_t) &br, p)) != 0) {
  130                                 DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n", 
  131                                          br.ifr_name, sr.svr4_ifr_name, error));
  132                                 return error;
  133                         }
  134 
  135                         sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
  136                         DPRINTF(("SIOCGIFFLAGS %s = %x\n", 
  137                                 sr.svr4_ifr_name, sr.svr4_ifr_flags));
  138                         return copyout(&sr, data, sizeof(sr));
  139                 }
  140 
  141         case SVR4_SIOCGIFCONF:
  142                 {
  143                         struct svr4_ifconf sc;
  144 
  145                         if ((error = copyin(data, &sc, sizeof(sc))) != 0)
  146                                 return error;
  147 
  148                         DPRINTF(("ifreq %d svr4_ifreq %d ifc_len %d\n",
  149                                 sizeof(struct ifreq), sizeof(struct svr4_ifreq),
  150                                 sc.svr4_ifc_len));
  151 
  152                         if ((error = fo_ioctl(fp, OSIOCGIFCONF,
  153                                             (caddr_t) &sc, p)) != 0)
  154                                 return error;
  155 
  156                         DPRINTF(("SIOCGIFCONF\n"));
  157                         return 0;
  158                 }
  159 
  160 
  161         default:
  162                 DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
  163                 return 0;       /* ENOSYS really */
  164         }
  165 }

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FreeBSD/Linux Kernel Cross Reference sys/svr4/svr4_sockio.c

FreeBSD/Linux Kernel Cross Reference
sys/svr4/svr4_sockio.c