| /* |
| * Copyright (c) 2009, Sun Microsystems, Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * - Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * - Neither the name of Sun Microsystems, Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <config.h> |
| #include <sys/cdefs.h> |
| |
| /* |
| * xdr_reference.c, Generic XDR routines impelmentation. |
| * |
| * Copyright (C) 1987, Sun Microsystems, Inc. |
| * |
| * These are the "non-trivial" xdr primitives used to serialize and de-serialize |
| * "pointers". See xdr.h for more info on the interface to xdr. |
| */ |
| |
| #include "namespace.h" |
| #if !defined(_WIN32) |
| #include <err.h> |
| #endif |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include <rpc/types.h> |
| #include <rpc/xdr_inline.h> |
| #include <rpc/rpc.h> |
| |
| #if defined(__FreeBSD__) || defined(__NetBSD__) |
| #include <libc_private.h> |
| #endif |
| |
| /* |
| * XDR an indirect pointer |
| * xdr_reference is for recursively translating a structure that is |
| * referenced by a pointer inside the structure that is currently being |
| * translated. pp references a pointer to storage. If *pp is null |
| * the necessary storage is allocated. |
| * size is the sizeof the referneced structure. |
| * proc is the routine to handle the referenced structure. |
| */ |
| bool |
| xdr_reference(XDR *xdrs, caddr_t *pp, /* the pointer to work on */ |
| u_int size, /* size of the object pointed to */ |
| xdrproc_t proc /* xdr routine to handle the object */) |
| { |
| caddr_t loc = *pp; |
| bool stat; |
| |
| if (loc == NULL) |
| switch (xdrs->x_op) { |
| case XDR_FREE: |
| return (true); |
| |
| case XDR_DECODE: |
| *pp = loc = (caddr_t) mem_alloc(size); |
| if (loc == NULL) { |
| __warnx(TIRPC_DEBUG_FLAG_XDR, |
| "xdr_reference: out of memory"); |
| return (false); |
| } |
| memset(loc, 0, size); |
| break; |
| |
| case XDR_ENCODE: |
| break; |
| } |
| |
| stat = (*proc) (xdrs, loc); |
| |
| if (xdrs->x_op == XDR_FREE) { |
| mem_free(loc, size); |
| *pp = NULL; |
| } |
| return (stat); |
| } |
| |
| /* |
| * xdr_pointer(): |
| * |
| * XDR a pointer to a possibly recursive data structure. This |
| * differs with xdr_reference in that it can serialize/deserialiaze |
| * trees correctly. |
| * |
| * What's sent is actually a union: |
| * |
| * union object_pointer switch (boolean b) { |
| * case true: object_data data; |
| * case false: void nothing; |
| * } |
| * |
| * > objpp: Pointer to the pointer to the object. |
| * > obj_size: size of the object. |
| * > xdr_obj: routine to XDR an object. |
| * |
| */ |
| bool xdr_pointer(XDR *xdrs, char **objpp, u_int obj_size, xdrproc_t xdr_obj) |
| { |
| |
| bool_t more_data; |
| |
| more_data = (*objpp != NULL); |
| if (!inline_xdr_bool(xdrs, &more_data)) |
| return (false); |
| if (!more_data) { |
| *objpp = NULL; |
| return (true); |
| } |
| return (xdr_reference(xdrs, objpp, obj_size, xdr_obj)); |
| } |