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/*********************************************************
* Copyright (C) 2008 VMware, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation version 2.1 and no later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the Lesser GNU General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*********************************************************/
/*
* xdrutil.c --
*
* Utility functions for code that uses XDR to encode/decode data.
*/
#include <stdlib.h>
#include <string.h>
#include "vm_assert.h"
#include "vmxrpc.h"
#include "xdrutil.h"
/*
*-----------------------------------------------------------------------------
*
* XdrUtil_ArrayAppend --
*
* Appends 'cnt' new elements of size 'sz' at the end of the given array.
* If successful, len will contain the count of elements in the new
* array.
*
* The newly allocated memory is zeroed out.
*
* Results:
* NULL on allocation failure, pointer to the first new element otherwise.
*
* Side effects:
* None.
*
*-----------------------------------------------------------------------------
*/
void *
XdrUtil_ArrayAppend(void **array, // IN/OUT
u_int *arrayLen, // IN/OUT
size_t elemSz, // IN
u_int elemCnt) // IN
{
void *ret = NULL;
void *newarray;
newarray = realloc(*array, (*arrayLen + elemCnt) * elemSz);
if (newarray != NULL) {
ret = &((char *)newarray)[*arrayLen * elemSz];
memset(ret, 0, elemSz * elemCnt);
*array = newarray;
*arrayLen = *arrayLen + elemCnt;
}
return ret;
}
/*
*-----------------------------------------------------------------------------
*
* XdrUtil_Deserialize --
*
* Deserializes the given data into the provided destination, using the
* given XDR function.
*
* Results:
* Whether deserialization was successful.
*
* Side effects:
* None.
*
*-----------------------------------------------------------------------------
*/
Bool
XdrUtil_Deserialize(const void *data, // IN
size_t dataLen, // IN
void *xdrProc, // IN
void *dest) // IN
{
Bool ret;
xdrproc_t proc = xdrProc;
XDR xdrs;
ASSERT(data != NULL);
ASSERT(xdrProc != NULL);
ASSERT(dest != NULL);
xdrmem_create(&xdrs, (char *) data, dataLen, XDR_DECODE);
ret = (Bool) proc(&xdrs, dest);
xdr_destroy(&xdrs);
if (!ret) {
VMX_XDR_FREE(proc, dest);
}
return ret;
}
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