1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/*********************************************************
* 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.
*
*********************************************************/
#ifndef _XDRUTIL_H_
#define _XDRUTIL_H_
/*
* xdrutil.h --
*
* Utility functions for code that uses XDR to encode/decode data.
*/
#include <rpc/rpc.h>
#include "vm_basic_types.h"
/*
* Helper macros for iterating over an rpcgen-generated array. Given a struct S:
*
* struct S {
* struct {
* u_int f_len;
* T *f_val;
* } f;
* };
*
* Iterate over the array like this:
*
* S s;
* u_int i;
*
* XDRUTIL_FOREACH(i, &s, f) {
* T *t = XDRUTIL_GETITEM(&s, f, i);
* }
*
* 'f' should be a string with the field name.
*/
#define XDRUTIL_FOREACH(counter, ptr, field) \
for ((counter) = 0; (counter) < (ptr)->field.field##_len; (counter)++)
#define XDRUTIL_GETITEM(ptr, field, idx) &((ptr)->field.field##_val[idx])
/*
* Wrapper for XdrUtil_ArrayAppend that automatically populates the arguments
* from a given XDR array.
*/
#define XDRUTIL_ARRAYAPPEND(ptr, field, cnt) \
XdrUtil_ArrayAppend((void **) &(ptr)->field.field##_val, \
&(ptr)->field.field##_len, \
sizeof *(ptr)->field.field##_val, \
(cnt));
void *
XdrUtil_ArrayAppend(void **array, u_int *arrayLen, size_t elemSz, u_int elemCnt);
#endif /* _XDRUTIL_H_ */
|