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: releng/7.4/sys/compat/svr4/svr4_sockio.c 160980 2006-08-04 21:15:09Z brooks $");
   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 
   41 
   42 #include <compat/svr4/svr4.h>
   43 #include <compat/svr4/svr4_util.h>
   44 #include <compat/svr4/svr4_ioctl.h>
   45 #include <compat/svr4/svr4_sockio.h>
   46 
   47 static int bsd_to_svr4_flags(int);
   48 
   49 #define bsd_to_svr4_flag(a) \
   50         if (bf & __CONCAT(I,a)) sf |= __CONCAT(SVR4_I,a)
   51 
   52 static int
   53 bsd_to_svr4_flags(bf)
   54         int bf;
   55 {
   56         int sf = 0;
   57         bsd_to_svr4_flag(FF_UP);
   58         bsd_to_svr4_flag(FF_BROADCAST);
   59         bsd_to_svr4_flag(FF_DEBUG);
   60         bsd_to_svr4_flag(FF_LOOPBACK);
   61         bsd_to_svr4_flag(FF_POINTOPOINT);
   62 #if defined(IFF_NOTRAILERS)
   63         bsd_to_svr4_flag(FF_NOTRAILERS);
   64 #endif
   65         if (bf & IFF_DRV_RUNNING)
   66                 sf |= SVR4_IFF_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(fp, td, retval, fd, cmd, data)
   76         struct file *fp;
   77         struct thread *td;
   78         register_t *retval;
   79         int fd;
   80         u_long cmd;
   81         caddr_t data;
   82 {
   83         int error;
   84 
   85         *retval = 0;
   86 
   87         switch (cmd) {
   88         case SVR4_SIOCGIFNUM:
   89                 {
   90                         struct ifnet *ifp;
   91                         struct ifaddr *ifa;
   92                         int ifnum = 0;
   93 
   94                         /*
   95                          * This does not return the number of physical
   96                          * interfaces (if_index), but the number of interfaces
   97                          * + addresses like ifconf() does, because this number
   98                          * is used by code that will call SVR4_SIOCGIFCONF to
   99                          * find the space needed for SVR4_SIOCGIFCONF. So we
  100                          * count the number of ifreq entries that the next
  101                          * SVR4_SIOCGIFCONF will return. Maybe a more correct
  102                          * fix is to make SVR4_SIOCGIFCONF return only one
  103                          * entry per physical interface?
  104                          */
  105                         IFNET_RLOCK();
  106                         TAILQ_FOREACH(ifp, &ifnet, if_link)
  107                                 if (TAILQ_EMPTY(&ifp->if_addrhead))
  108                                         ifnum++;
  109                                 else
  110                                         TAILQ_FOREACH(ifa, &ifp->if_addrhead,
  111                                             ifa_link)
  112                                                 ifnum++;
  113                         IFNET_RUNLOCK();
  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) strlcpy(br.ifr_name, sr.svr4_ifr_name,
  127                             sizeof(br.ifr_name));
  128                         if ((error = fo_ioctl(fp, SIOCGIFFLAGS, 
  129                                             (caddr_t) &br, td->td_ucred,
  130                                             td)) != 0) {
  131                                 DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n", 
  132                                          br.ifr_name, sr.svr4_ifr_name, error));
  133                                 return error;
  134                         }
  135 
  136                         sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
  137                         DPRINTF(("SIOCGIFFLAGS %s = %x\n", 
  138                                 sr.svr4_ifr_name, sr.svr4_ifr_flags));
  139                         return copyout(&sr, data, sizeof(sr));
  140                 }
  141 
  142         case SVR4_SIOCGIFCONF:
  143                 {
  144                         struct svr4_ifconf sc;
  145 
  146                         if ((error = copyin(data, &sc, sizeof(sc))) != 0)
  147                                 return error;
  148 
  149                         DPRINTF(("ifreq %d svr4_ifreq %d ifc_len %d\n",
  150                                 sizeof(struct ifreq), sizeof(struct svr4_ifreq),
  151                                 sc.svr4_ifc_len));
  152 
  153                         if ((error = fo_ioctl(fp, OSIOCGIFCONF,
  154                                             (caddr_t) &sc, td->td_ucred,
  155                                             td)) != 0)
  156                                 return error;
  157 
  158                         DPRINTF(("SIOCGIFCONF\n"));
  159                         return 0;
  160                 }
  161 
  162 
  163         default:
  164                 DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
  165                 return 0;       /* ENOSYS really */
  166         }
  167 }

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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