svr4_sockio.c

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    1 /*      $NetBSD: svr4_sockio.c,v 1.26 2006/11/16 01:32:44 christos Exp $         */
    2 
    3 /*-
    4  * Copyright (c) 1995 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Christos Zoulas.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #include <sys/cdefs.h>
   40 __KERNEL_RCSID(0, "$NetBSD: svr4_sockio.c,v 1.26 2006/11/16 01:32:44 christos Exp $");
   41 
   42 #include <sys/param.h>
   43 #include <sys/proc.h>
   44 #include <sys/systm.h>
   45 #include <sys/file.h>
   46 #include <sys/filedesc.h>
   47 #include <sys/ioctl.h>
   48 #include <sys/termios.h>
   49 #include <sys/tty.h>
   50 #include <sys/socket.h>
   51 #include <sys/ioctl.h>
   52 #include <sys/mount.h>
   53 #include <net/if.h>
   54 #include <sys/malloc.h>
   55 
   56 #include <sys/sa.h>
   57 #include <sys/syscallargs.h>
   58 
   59 #include <compat/sys/socket.h>
   60 
   61 #include <compat/svr4/svr4_types.h>
   62 #include <compat/svr4/svr4_util.h>
   63 #include <compat/svr4/svr4_signal.h>
   64 #include <compat/svr4/svr4_lwp.h>
   65 #include <compat/svr4/svr4_ucontext.h>
   66 #include <compat/svr4/svr4_syscallargs.h>
   67 #include <compat/svr4/svr4_stropts.h>
   68 #include <compat/svr4/svr4_ioctl.h>
   69 #include <compat/svr4/svr4_sockio.h>
   70 
   71 static int bsd_to_svr4_flags __P((int));
   72 
   73 #define bsd_to_svr4_flag(a) \
   74         if (bf & __CONCAT(I,a)) sf |= __CONCAT(SVR4_I,a)
   75 
   76 static int
   77 bsd_to_svr4_flags(bf)
   78         int bf;
   79 {
   80         int sf = 0;
   81         bsd_to_svr4_flag(FF_UP);
   82         bsd_to_svr4_flag(FF_BROADCAST);
   83         bsd_to_svr4_flag(FF_DEBUG);
   84         bsd_to_svr4_flag(FF_LOOPBACK);
   85         bsd_to_svr4_flag(FF_POINTOPOINT);
   86         bsd_to_svr4_flag(FF_NOTRAILERS);
   87         bsd_to_svr4_flag(FF_RUNNING);
   88         bsd_to_svr4_flag(FF_NOARP);
   89         bsd_to_svr4_flag(FF_PROMISC);
   90         bsd_to_svr4_flag(FF_ALLMULTI);
   91         bsd_to_svr4_flag(FF_MULTICAST);
   92         return sf;
   93 }
   94 
   95 int
   96 svr4_sock_ioctl(struct file *fp, struct lwp *l, register_t *retval,
   97     int fd, u_long cmd, caddr_t data)
   98 {
   99         int error;
  100         int (*ctl)(struct file *, u_long,  void *, struct lwp *) =
  101                         fp->f_ops->fo_ioctl;
  102 
  103         *retval = 0;
  104 
  105         switch (cmd) {
  106         case SVR4_SIOCGLIFNUM:
  107                 {
  108                         struct ifnet *ifp;
  109                         struct ifaddr *ifa;
  110                         struct svr4_lifnum lifnum;
  111 
  112                         error = copyin(data, &lifnum, sizeof(lifnum));
  113                         if (error)
  114                                 return error;
  115 
  116                         lifnum.lifn_count = 0;
  117                         /* XXX: We don't pay attention to family or flags */
  118                         for (ifp = ifnet.tqh_first;
  119                              ifp != 0; ifp = ifp->if_list.tqe_next)
  120                                 if ((ifa = ifp->if_addrlist.tqh_first) == NULL)
  121                                         lifnum.lifn_count++;
  122                                 else
  123                                         for (;ifa != NULL;
  124                                             ifa = ifa->ifa_list.tqe_next)
  125                                                 lifnum.lifn_count++;
  126 
  127                         DPRINTF(("SIOCGLIFNUM [family=%d,flags=%d,count=%d]\n",
  128                             lifnum.lifn_family, lifnum.lifn_flags,
  129                             lifnum.lifn_count));
  130                         return copyout(&lifnum, data, sizeof(lifnum));
  131                 }
  132 
  133         case SVR4_SIOCGIFNUM:
  134                 {
  135                         struct ifnet *ifp;
  136                         struct ifaddr *ifa;
  137                         int ifnum = 0;
  138 
  139                         /*
  140                          * This does not return the number of physical
  141                          * interfaces (if_index), but the number of interfaces
  142                          * + addresses like ifconf() does, because this number
  143                          * is used by code that will call SVR4_SIOCGIFCONF to
  144                          * find the space needed for SVR4_SIOCGIFCONF. So we
  145                          * count the number of ifreq entries that the next
  146                          * SVR4_SIOCGIFCONF will return. Maybe a more correct
  147                          * fix is to make SVR4_SIOCGIFCONF return only one
  148                          * entry per physical interface?
  149                          */
  150 
  151                         for (ifp = ifnet.tqh_first;
  152                              ifp != 0; ifp = ifp->if_list.tqe_next)
  153                                 if ((ifa = ifp->if_addrlist.tqh_first) == NULL)
  154                                         ifnum++;
  155                                 else
  156                                         for (;ifa != NULL;
  157                                             ifa = ifa->ifa_list.tqe_next)
  158                                                 ifnum++;
  159 
  160 
  161                         DPRINTF(("SIOCGIFNUM %d\n", ifnum));
  162                         return copyout(&ifnum, data, sizeof(ifnum));
  163                 }
  164 
  165         case SVR4_SIOCGIFFLAGS:
  166                 {
  167                         struct ifreq br;
  168                         struct svr4_ifreq sr;
  169 
  170                         if ((error = copyin(data, &sr, sizeof(sr))) != 0)
  171                                 return error;
  172 
  173                         (void) strncpy(br.ifr_name, sr.svr4_ifr_name,
  174                             sizeof(br.ifr_name));
  175 
  176                         if ((error = (*ctl)(fp, SIOCGIFFLAGS,
  177                                             (caddr_t) &br, l)) != 0) {
  178                                 DPRINTF(("SIOCGIFFLAGS %s: error %d\n",
  179                                          sr.svr4_ifr_name, error));
  180                                 return error;
  181                         }
  182 
  183                         sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
  184                         DPRINTF(("SIOCGIFFLAGS %s = %x\n",
  185                                 sr.svr4_ifr_name, sr.svr4_ifr_flags));
  186                         return copyout(&sr, data, sizeof(sr));
  187                 }
  188 
  189         case SVR4_SIOCGIFCONF:
  190                 {
  191                         struct svr4_ifconf sc;
  192 
  193                         if ((error = copyin(data, &sc, sizeof(sc))) != 0)
  194                                 return error;
  195 
  196                         DPRINTF(("ifreq %ld svr4_ifreq %ld ifc_len %d\n",
  197                                 (unsigned long)sizeof(struct ifreq),
  198                                 (unsigned long)sizeof(struct svr4_ifreq),
  199                                 sc.svr4_ifc_len));
  200 
  201                         if ((error = (*ctl)(fp, OSIOCGIFCONF,
  202                                             (caddr_t) &sc, l)) != 0)
  203                                 return error;
  204 
  205                         DPRINTF(("SIOCGIFCONF\n"));
  206                         return 0;
  207                 }
  208 
  209 
  210         default:
  211                 DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
  212                 return 0;       /* ENOSYS really */
  213         }
  214 }

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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