mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 18:23:41 +08:00
142 lines
4.1 KiB
C
142 lines
4.1 KiB
C
/*
|
|
* 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 (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 (xdr_pointer, GLIBC_2_0)
|
|
#endif
|