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 
   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/vnet.h>
   42 
   43 #include <compat/svr4/svr4.h>
   44 #include <compat/svr4/svr4_util.h>
   45 #include <compat/svr4/svr4_ioctl.h>
   46 #include <compat/svr4/svr4_sockio.h>
   47 
   48 static int bsd_to_svr4_flags(int);
   49 
   50 #define bsd_to_svr4_flag(a) \
   51         if (bf & __CONCAT(I,a)) sf |= __CONCAT(SVR4_I,a)
   52 
   53 static int
   54 bsd_to_svr4_flags(bf)
   55         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         if (bf & IFF_DRV_RUNNING)
   67                 sf |= SVR4_IFF_RUNNING;
   68         bsd_to_svr4_flag(FF_NOARP);
   69         bsd_to_svr4_flag(FF_PROMISC);
   70         bsd_to_svr4_flag(FF_ALLMULTI);
   71         bsd_to_svr4_flag(FF_MULTICAST);
   72         return sf;
   73 }
   74 
   75 int
   76 svr4_sock_ioctl(fp, td, retval, fd, cmd, data)
   77         struct file *fp;
   78         struct thread *td;
   79         register_t *retval;
   80         int fd;
   81         u_long cmd;
   82         caddr_t data;
   83 {
   84         int error;
   85 
   86         *retval = 0;
   87 
   88         switch (cmd) {
   89         case SVR4_SIOCGIFNUM:
   90                 {
   91                         struct ifnet *ifp;
   92                         struct ifaddr *ifa;
   93                         int ifnum = 0;
   94 
   95                         /*
   96                          * This does not return the number of physical
   97                          * interfaces (if_index), but the number of interfaces
   98                          * + addresses like ifconf() does, because this number
   99                          * is used by code that will call SVR4_SIOCGIFCONF to
  100                          * find the space needed for SVR4_SIOCGIFCONF. So we
  101                          * count the number of ifreq entries that the next
  102                          * SVR4_SIOCGIFCONF will return. Maybe a more correct
  103                          * fix is to make SVR4_SIOCGIFCONF return only one
  104                          * entry per physical interface?
  105                          */
  106                         IFNET_RLOCK();
  107                         TAILQ_FOREACH(ifp, &V_ifnet, if_link)
  108                                 if (TAILQ_EMPTY(&ifp->if_addrhead))
  109                                         ifnum++;
  110                                 else
  111                                         TAILQ_FOREACH(ifa, &ifp->if_addrhead,
  112                                             ifa_link)
  113                                                 ifnum++;
  114                         IFNET_RUNLOCK();
  115                         DPRINTF(("SIOCGIFNUM %d\n", ifnum));
  116                         return copyout(&ifnum, data, sizeof(ifnum));
  117                 }
  118 
  119         case SVR4_SIOCGIFFLAGS:
  120                 {
  121                         struct ifreq br;
  122                         struct svr4_ifreq sr;
  123 
  124                         if ((error = copyin(data, &sr, sizeof(sr))) != 0)
  125                                 return error;
  126 
  127                         (void) strlcpy(br.ifr_name, sr.svr4_ifr_name,
  128                             sizeof(br.ifr_name));
  129                         if ((error = fo_ioctl(fp, SIOCGIFFLAGS, 
  130                                             (caddr_t) &br, td->td_ucred,
  131                                             td)) != 0) {
  132                                 DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n", 
  133                                          br.ifr_name, sr.svr4_ifr_name, error));
  134                                 return error;
  135                         }
  136 
  137                         sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
  138                         DPRINTF(("SIOCGIFFLAGS %s = %x\n", 
  139                                 sr.svr4_ifr_name, sr.svr4_ifr_flags));
  140                         return copyout(&sr, data, sizeof(sr));
  141                 }
  142 
  143         case SVR4_SIOCGIFCONF:
  144                 {
  145                         struct svr4_ifconf sc;
  146 
  147                         if ((error = copyin(data, &sc, sizeof(sc))) != 0)
  148                                 return error;
  149 
  150                         DPRINTF(("ifreq %d svr4_ifreq %d ifc_len %d\n",
  151                                 sizeof(struct ifreq), sizeof(struct svr4_ifreq),
  152                                 sc.svr4_ifc_len));
  153 
  154                         if ((error = fo_ioctl(fp, OSIOCGIFCONF,
  155                                             (caddr_t) &sc, td->td_ucred,
  156                                             td)) != 0)
  157                                 return error;
  158 
  159                         DPRINTF(("SIOCGIFCONF\n"));
  160                         return 0;
  161                 }
  162 
  163 
  164         default:
  165                 DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
  166                 return 0;       /* ENOSYS really */
  167         }
  168 }

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

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