| /* |
| * xdr_reference.c, Generic XDR routines implementation. |
| * |
| * Copyright (c) 2010, Oracle America, Inc. |
| * |
| * 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 the "Oracle America, 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. |
| * |
| * 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 <stdio.h> |
| #include <string.h> |
| #include <rpc/types.h> |
| #include <rpc/xdr.h> |
| #include <libintl.h> |
| #include <wchar.h> |
| #include <libio/iolibio.h> |
| |
| #define LASTUNSIGNED ((u_int)0-1) |
| |
| /* |
| * 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 size of the referneced structure. |
| * proc is the routine to handle the referenced structure. |
| */ |
| bool_t |
| xdr_reference (xdrs, pp, size, proc) |
| 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_t stat; |
| |
| if (loc == NULL) |
| switch (xdrs->x_op) |
| { |
| case XDR_FREE: |
| return TRUE; |
| |
| case XDR_DECODE: |
| *pp = loc = (caddr_t) calloc (1, size); |
| if (loc == NULL) |
| { |
| (void) __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n")); |
| return FALSE; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| stat = (*proc) (xdrs, loc, LASTUNSIGNED); |
| |
| if (xdrs->x_op == XDR_FREE) |
| { |
| mem_free (loc, size); |
| *pp = NULL; |
| } |
| return stat; |
| } |
| libc_hidden_nolink_sunrpc (xdr_reference, GLIBC_2_0) |
| |
| |
| /* |
| * xdr_pointer(): |
| * |
| * XDR a pointer to a possibly recursive data structure. This |
| * differs with xdr_reference in that it can serialize/deserialize |
| * 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_t |
| xdr_pointer (xdrs, objpp, obj_size, xdr_obj) |
| XDR *xdrs; |
| char **objpp; |
| u_int obj_size; |
| xdrproc_t xdr_obj; |
| { |
| |
| bool_t more_data; |
| |
| more_data = (*objpp != NULL); |
| if (!xdr_bool (xdrs, &more_data)) |
| { |
| return FALSE; |
| } |
| if (!more_data) |
| { |
| *objpp = NULL; |
| return TRUE; |
| } |
| return xdr_reference (xdrs, objpp, obj_size, xdr_obj); |
| } |
| #ifdef EXPORT_RPC_SYMBOLS |
| libc_hidden_def (xdr_pointer) |
| #else |
| libc_hidden_nolink_sunrpc (xdr_pointer, GLIBC_2_0) |
| #endif |
