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142 lines
4.1 KiB
C
142 lines
4.1 KiB
C
/*
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* xdr_reference.c, Generic XDR routines implementation.
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*
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* Copyright (c) 2010, Oracle America, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the "Oracle America, Inc." nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* These are the "non-trivial" xdr primitives used to serialize and
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* de-serialize "pointers". See xdr.h for more info on the interface to xdr.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#include <libintl.h>
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#include <wchar.h>
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#include <libio/iolibio.h>
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#define LASTUNSIGNED ((u_int)0-1)
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/*
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* XDR an indirect pointer
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* xdr_reference is for recursively translating a structure that is
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* referenced by a pointer inside the structure that is currently being
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* translated. pp references a pointer to storage. If *pp is null
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* the necessary storage is allocated.
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* size is the size of the referneced structure.
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* proc is the routine to handle the referenced structure.
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*/
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bool_t
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xdr_reference (xdrs, pp, size, proc)
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XDR *xdrs;
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caddr_t *pp; /* the pointer to work on */
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u_int size; /* size of the object pointed to */
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xdrproc_t proc; /* xdr routine to handle the object */
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{
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caddr_t loc = *pp;
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bool_t stat;
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if (loc == NULL)
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switch (xdrs->x_op)
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{
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case XDR_FREE:
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return TRUE;
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case XDR_DECODE:
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*pp = loc = (caddr_t) calloc (1, size);
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if (loc == NULL)
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{
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(void) __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n"));
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return FALSE;
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}
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break;
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default:
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break;
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}
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stat = (*proc) (xdrs, loc, LASTUNSIGNED);
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if (xdrs->x_op == XDR_FREE)
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{
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mem_free (loc, size);
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*pp = NULL;
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}
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return stat;
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}
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libc_hidden_nolink (xdr_reference, GLIBC_2_0)
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/*
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* xdr_pointer():
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*
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* XDR a pointer to a possibly recursive data structure. This
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* differs with xdr_reference in that it can serialize/deserialize
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* trees correctly.
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*
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* What's sent is actually a union:
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*
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* union object_pointer switch (boolean b) {
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* case TRUE: object_data data;
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* case FALSE: void nothing;
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* }
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*
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* > objpp: Pointer to the pointer to the object.
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* > obj_size: size of the object.
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* > xdr_obj: routine to XDR an object.
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*
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*/
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bool_t
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xdr_pointer (xdrs, objpp, obj_size, xdr_obj)
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XDR *xdrs;
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char **objpp;
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u_int obj_size;
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xdrproc_t xdr_obj;
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{
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bool_t more_data;
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more_data = (*objpp != NULL);
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if (!xdr_bool (xdrs, &more_data))
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{
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return FALSE;
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}
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if (!more_data)
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{
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*objpp = NULL;
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return TRUE;
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}
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return xdr_reference (xdrs, objpp, obj_size, xdr_obj);
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_pointer)
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#else
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libc_hidden_nolink (xdr_pointer, GLIBC_2_0)
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#endif
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