rpcb_prot.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*      $NetBSD: rpcb_prot.c,v 1.3 2000/07/14 08:40:42 fvdl Exp $       */
    2 
    3 /*-
    4  * Copyright (c) 2009, Sun Microsystems, Inc.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without 
    8  * modification, are permitted provided that the following conditions are met:
    9  * - Redistributions of source code must retain the above copyright notice, 
   10  *   this list of conditions and the following disclaimer.
   11  * - Redistributions in binary form must reproduce the above copyright notice, 
   12  *   this list of conditions and the following disclaimer in the documentation 
   13  *   and/or other materials provided with the distribution.
   14  * - Neither the name of Sun Microsystems, Inc. nor the names of its 
   15  *   contributors may be used to endorse or promote products derived 
   16  *   from this software without specific prior written permission.
   17  * 
   18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
   19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
   22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
   28  * POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 /*
   31  * Copyright (c) 1986-1991 by Sun Microsystems Inc. 
   32  */
   33 
   34 /* #ident       "@(#)rpcb_prot.c        1.13    94/04/24 SMI" */
   35 
   36 #if defined(LIBC_SCCS) && !defined(lint)
   37 static char sccsid[] = "@(#)rpcb_prot.c 1.9 89/04/21 Copyr 1984 Sun Micro";
   38 #endif
   39 #include <sys/cdefs.h>
   40 __FBSDID("$FreeBSD$");
   41 
   42 /*
   43  * rpcb_prot.c
   44  * XDR routines for the rpcbinder version 3.
   45  *
   46  * Copyright (C) 1984, 1988, Sun Microsystems, Inc.
   47  */
   48 
   49 #include <sys/param.h>
   50 #include <sys/systm.h>
   51 #include <sys/kernel.h>
   52 #include <sys/malloc.h>
   53 
   54 #include <rpc/rpc.h>
   55 #include <rpc/rpcb_prot.h>
   56 
   57 bool_t
   58 xdr_portmap(XDR *xdrs, struct portmap *regs)
   59 {
   60 
   61         if (xdr_u_long(xdrs, &regs->pm_prog) &&
   62                 xdr_u_long(xdrs, &regs->pm_vers) &&
   63                 xdr_u_long(xdrs, &regs->pm_prot))
   64                 return (xdr_u_long(xdrs, &regs->pm_port));
   65         return (FALSE);
   66 }
   67 
   68 bool_t
   69 xdr_rpcb(XDR *xdrs, RPCB *objp)
   70 {
   71         if (!xdr_uint32_t(xdrs, &objp->r_prog)) {
   72                 return (FALSE);
   73         }
   74         if (!xdr_uint32_t(xdrs, &objp->r_vers)) {
   75                 return (FALSE);
   76         }
   77         if (!xdr_string(xdrs, &objp->r_netid, (u_int)~0)) {
   78                 return (FALSE);
   79         }
   80         if (!xdr_string(xdrs, &objp->r_addr, (u_int)~0)) {
   81                 return (FALSE);
   82         }
   83         if (!xdr_string(xdrs, &objp->r_owner, (u_int)~0)) {
   84                 return (FALSE);
   85         }
   86         return (TRUE);
   87 }
   88 
   89 /*
   90  * rpcblist_ptr implements a linked list.  The RPCL definition from
   91  * rpcb_prot.x is:
   92  *
   93  * struct rpcblist {
   94  *      rpcb            rpcb_map;
   95  *      struct rpcblist *rpcb_next;
   96  * };
   97  * typedef rpcblist *rpcblist_ptr;
   98  *
   99  * Recall that "pointers" in XDR are encoded as a boolean, indicating whether
  100  * there's any data behind the pointer, followed by the data (if any exists).
  101  * The boolean can be interpreted as ``more data follows me''; if FALSE then
  102  * nothing follows the boolean; if TRUE then the boolean is followed by an
  103  * actual struct rpcb, and another rpcblist_ptr (declared in RPCL as "struct
  104  * rpcblist *").
  105  *
  106  * This could be implemented via the xdr_pointer type, though this would
  107  * result in one recursive call per element in the list.  Rather than do that
  108  * we can ``unwind'' the recursion into a while loop and use xdr_reference to
  109  * serialize the rpcb elements.
  110  */
  111 
  112 bool_t
  113 xdr_rpcblist_ptr(XDR *xdrs, rpcblist_ptr *rp)
  114 {
  115         /*
  116          * more_elements is pre-computed in case the direction is
  117          * XDR_ENCODE or XDR_FREE.  more_elements is overwritten by
  118          * xdr_bool when the direction is XDR_DECODE.
  119          */
  120         bool_t more_elements;
  121         int freeing = (xdrs->x_op == XDR_FREE);
  122         rpcblist_ptr next;
  123         rpcblist_ptr next_copy;
  124 
  125         next = NULL;
  126         for (;;) {
  127                 more_elements = (bool_t)(*rp != NULL);
  128                 if (! xdr_bool(xdrs, &more_elements)) {
  129                         return (FALSE);
  130                 }
  131                 if (! more_elements) {
  132                         return (TRUE);  /* we are done */
  133                 }
  134                 /*
  135                  * the unfortunate side effect of non-recursion is that in
  136                  * the case of freeing we must remember the next object
  137                  * before we free the current object ...
  138                  */
  139                 if (freeing && *rp)
  140                         next = (*rp)->rpcb_next;
  141                 if (! xdr_reference(xdrs, (caddr_t *)rp,
  142                     (u_int)sizeof (RPCBLIST), (xdrproc_t)xdr_rpcb)) {
  143                         return (FALSE);
  144                 }
  145                 if (freeing) {
  146                         next_copy = next;
  147                         rp = &next_copy;
  148                         /*
  149                          * Note that in the subsequent iteration, next_copy
  150                          * gets nulled out by the xdr_reference
  151                          * but next itself survives.
  152                          */
  153                 } else if (*rp) {
  154                         rp = &((*rp)->rpcb_next);
  155                 }
  156         }
  157         /*NOTREACHED*/
  158 }
  159 
  160 #if 0
  161 /*
  162  * xdr_rpcblist() is specified to take a RPCBLIST **, but is identical in
  163  * functionality to xdr_rpcblist_ptr().
  164  */
  165 bool_t
  166 xdr_rpcblist(XDR *xdrs, RPCBLIST **rp)
  167 {
  168         bool_t  dummy;
  169 
  170         dummy = xdr_rpcblist_ptr(xdrs, (rpcblist_ptr *)rp);
  171         return (dummy);
  172 }
  173 #endif
  174 
  175 bool_t
  176 xdr_rpcb_entry(XDR *xdrs, rpcb_entry *objp)
  177 {
  178         if (!xdr_string(xdrs, &objp->r_maddr, (u_int)~0)) {
  179                 return (FALSE);
  180         }
  181         if (!xdr_string(xdrs, &objp->r_nc_netid, (u_int)~0)) {
  182                 return (FALSE);
  183         }
  184         if (!xdr_uint32_t(xdrs, &objp->r_nc_semantics)) {
  185                 return (FALSE);
  186         }
  187         if (!xdr_string(xdrs, &objp->r_nc_protofmly, (u_int)~0)) {
  188                 return (FALSE);
  189         }
  190         if (!xdr_string(xdrs, &objp->r_nc_proto, (u_int)~0)) {
  191                 return (FALSE);
  192         }
  193         return (TRUE);
  194 }
  195 
  196 bool_t
  197 xdr_rpcb_entry_list_ptr(XDR *xdrs, rpcb_entry_list_ptr *rp)
  198 {
  199         /*
  200          * more_elements is pre-computed in case the direction is
  201          * XDR_ENCODE or XDR_FREE.  more_elements is overwritten by
  202          * xdr_bool when the direction is XDR_DECODE.
  203          */
  204         bool_t more_elements;
  205         int freeing = (xdrs->x_op == XDR_FREE);
  206         rpcb_entry_list_ptr next;
  207         rpcb_entry_list_ptr next_copy;
  208 
  209         next = NULL;
  210         for (;;) {
  211                 more_elements = (bool_t)(*rp != NULL);
  212                 if (! xdr_bool(xdrs, &more_elements)) {
  213                         return (FALSE);
  214                 }
  215                 if (! more_elements) {
  216                         return (TRUE);  /* we are done */
  217                 }
  218                 /*
  219                  * the unfortunate side effect of non-recursion is that in
  220                  * the case of freeing we must remember the next object
  221                  * before we free the current object ...
  222                  */
  223                 if (freeing)
  224                         next = (*rp)->rpcb_entry_next;
  225                 if (! xdr_reference(xdrs, (caddr_t *)rp,
  226                     (u_int)sizeof (rpcb_entry_list),
  227                                     (xdrproc_t)xdr_rpcb_entry)) {
  228                         return (FALSE);
  229                 }
  230                 if (freeing && *rp) {
  231                         next_copy = next;
  232                         rp = &next_copy;
  233                         /*
  234                          * Note that in the subsequent iteration, next_copy
  235                          * gets nulled out by the xdr_reference
  236                          * but next itself survives.
  237                          */
  238                 } else if (*rp) {
  239                         rp = &((*rp)->rpcb_entry_next);
  240                 }
  241         }
  242         /*NOTREACHED*/
  243 }

Cache object: f116d6d233d8cfff9da532e1284c0e76

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/rpc/rpcb_prot.c

FreeBSD/Linux Kernel Cross Reference
sys/rpc/rpcb_prot.c